Flitter swooped towards the upper levels of Canterlot Castle. Like all pegasi, she'd learned at a young age that certain buildings had an "enforced airspace," so it came as no surprise when winged guards approached and ordered her to land. That didn't bother her; her goal was to talk to the Princesses, and this was as good a way as any.

"I am an emissary of the conquering goddesses known as the Dazzlings!" said Flitter, manic and wide-eyed, as the guards stared her down. "I come to deliver their message to the Princesses, so that they may submit to their rule!"

Minutes later, Flitter was in the throne room, under close watch by royal guards. Celestia and Luna sat in their thrones, and fanned out around them were the Elements of Harmony, minus Princess Twilight. Shining Armor, former captain of the Canterlot Royal Guard, was at Celestia's right side, looking just as gravely serious as the Princesses.

"Flitter," said Princess Celestia, "You say you have something to tell us."

"The Dazzlings!" said Flitter, spreading her wings in excitement. "Gorgeous titans with heavenly bodies and voices! They have come to unite Equestria in worship!"

"I see," said Celestia. "And these Dazzlings would be the three bipedal creatures laying waste to Ponyville?"

"They are no mere creatures!" frothed Flitter. "You will come to know their divinity when their singing reaches your ears and cleanses your mind of unworshipfulness!"

Celestia sighed. "Twilight goes to the other world to battle sirens and does not return. And now, an obviously brainwashed pegasus comes tells us of creatures with powerful voices. Although their appearance is different, these giantesses can only be the sirens who were banished centuries ago. Shining Armor," she said, turning to him solemnly, "I must ask you to stay until this situation is resolved. Can your protective shield keep beings of their size, and the mind-affecting magic their voices possess?"

"Yes, Princess," said Shining Armor. "I am ready to deploy the shield at your command."

"You may as well do it," said Celestia. "I had hoped to avoid calling a state of emergency at all, but it's quite clear that the sirens are now more powerful than before, and they pose an imminent threat."

"Yes, Princess," said Shining Armor. A beam of light shot straight up from his horn, passed through the ceiling of the throne room, and burst over the Canterlot skyline, spreading a translucent lavender barrier over the entire city. "Anything else?"

Celestia waved the guards away, and they escorted Flitter out of the throne room. "Just concentrate on maintaining the barrier," said Celestia. "And remain here while we discuss our options."

"Looks like she's done her job," said Adagio, watching the barrier unfold over the distant city. "Now we just have to get through that and convert the Princesses."

"So what's the plan?" said Sonata, now fully dressed again, sitting on the toppled Friendship Castle as she pulled on her boots.

"Plan?" scoffed Adagio. "We're beyond plans, Sonata. We're going to walk over there, be huge and beautiful, and it's all going to work out in our favor."

"You're a brilliant leader as always, Adagio," sighed Aria.

"Ditto!" said Sonata. "But without the sarcasm!"

"All right, thralls," said Adagio, addressing the ponies at their feet. "We're going to Canterlot. Feel free to try and keep up." The sirens set off for the mountain range, with the population of Ponyville following behind. The pegasi kept up reasonably well, flitting behind at a respectful distance, but the unicorns and earth ponies fell behind. Still, they were tireless, steadily following towards the seat of Equestria's power.

With a sixty-foot stride, arriving at Canterlot took almost no time at all. Standing on the crushed remains of the small guard post that lay outside the barrier, Adagio lifted her hand and knocked on the glimmering purple shield. She found it solid, unmoving - even when she lifted her foot, set it on the side of the barrier, and leaned on it with all her weight. "Pretty strong," she said. "Doesn't look like the ponies down there are falling in love with us, either..."

"No..." said Aria thoughtfully. The ponies on the edges of the city were backing up in fear, but not in reverence. Aria hummed a tune, hoping to ensnare their minds, but nothing seemed to change. "Yeah, that's a powerful magic shield. This might actually be hard. I think we might actually need a plan now-" Her pony ears perked up as she heard a sound like hundreds of hoofbeats, growing louder in unison.

From the guard station within the barrier, there poured a formation of royal soldiers. Unicorns in the center bearing wide shields in their magical auras, earth ponies on the front and sides bearing weapons in their mouths, and pegasi flying above, rising to various heights. The royal guard was infrequently deployed, but they were a formidable force, more than enough to defeat three sixty-foot-tall teenage girls.

But when they passed the barrier, they were defeated in an instant. The mere presence of the Dazzlings, unmitigated by the magic of the barrier, converted their minds to worship, and they fell to their knees at the sirens' feet. Absorbing the love of the guards, the girls grew, stretching their arms and legs as the power filled them.

"No!" said Shining Armor, viewing the action through the window of the conference room where the Princesses and the Elements were gathered. "We need to call back the Wonderbolts-"

"No," said Luna solemnly. "Their role is still vital, Shining Armor."

"He's right, goldarnit!" said Applejack, slamming a hoof on the table. "We ain't gonna win by sacrificin'-"

"It is too late now," said Celestia. "They are leaving their tower. If they can escape the sirens' notice, it may be possible for them to deliver their payload..."

The royals and the elements watched in silence as the Wonderbolts flew from their positions - positions far from where the royal guard had marched from, positions chosen for the element of surprise. They left the barrier at points outside the Dazzlings' field of view, taking advantage of the distraction provided by the large, loud force of soldiers that had been making a head-on assault.

But they, too, were lost to the sirens' call as soon as they passed through the magical shield. They dropped their payloads - bags of magical powder enchanted with a potent knockout spell - and flew in front of the girls' faces, revealing themselves and apologizing profusely for daring to participate in an attack on them.

"Well," said Celestia, turning her head downward, "This at least provides us with new information. The sirens did not appear to notice the Wonderbolts before they were entranced. It seems they have grown so powerful that they need not even sing to command the minds of ponies. Shining Armor, it is of paramount importance that you maintain the shield. Without it, the city is lost."

"You'll forgive me if my focus isn't at its best, Your Majesty," said Shining Armor though clenched teeth. "I led that royal guard not long ago, and I just watched them all get enslaved. On a mission where they were intended as a mere distraction."

"We will free them," said Celestia. "For now, let nothing sway your focus."

"...Yes, Princess."

A sound like a bird hitting a window echoed through the city, repeating itself several times, and Shining Armor winced in time with each sound. "Are you all right, Shining Armor?" asked Fluttershy, putting a sympathetic hoof on his shoulder.

"They're pounding on the barrier," said Shining. "I can handle it. Just... try and figure something out."

"Hey Adagio! Hey Aria!" said Sonata, clambering onto the magical barrier. "If this breaks while I'm standing on it, how bad do you think I'll hurt myself?"

"I dunno," said Adagio. "Pretty bad, maybe?" Sonata began jumping up and down on the top of the magical dome, only barely managing to keep her balance every time her feet hit the smooth, rounded surface.

"Well, if she gets hurt and the barrier breaks, that's a win-win," said Aria. "So are we coming to the point where we actually need a plan, or..."

"I still think that having a plan is beneath us now," said Adagio, "but I'd be open to ideas." She squirmed, rolling her hips. "Something sexy, ideally. Growing again has got me all horny..."

"I've got a fun idea!" said Sonata. She stopped jumping and slowly lowered her body, draping it over the top of the magical dome. "Who wants to get eaten?" The assembled guard ponies stomped their hooves and cheered. "Wow! Lots of takers! Aria, help us out!" She opened her mouth and extended her tongue. "Aaaahhh~"

Aria scooped up a handful of wriggling guard ponies, and held one between the fingers of the other hand. "Well, this is an idea, and definitely not a plan," she said, "so I guess we're good." She lobbed the pony between her fingers at Sonata's open mouth, and scored a perfect hit on Sonata's tongue. The white, armored earth pony settled onto the soft wet muscle, and he gently squirmed as Sonata's tongue curled around him.

Shining Armor stared upward in dismay, struggling not to let his focus wane. The guard ponies - the ponies he had led until the day he had married Cadance and become a prince - were lining up to be eaten, and Sonata, still lying on top of the dome, was swallowing them whole. Shining Armor watched them being tossed into her mouth one by one, and then watched the shape of their bodies, armor and all, creep down Sonata Dusk's throat as she swallowed them.

As as he watched them descend her throat, his gaze couldn't help but go lower along her body. He'd never seen a human body before, but there was something alluring about it. The mounds on the upper body, smooshed against the surface of the barrier, looked so soft to the touch... and the long arms and legs, with that smooth, creamy skin...

Shining Armor grunted in annoyance at himself. He knew he wasn't falling under the influence of the sirens; ever since the incident with Chrysalis, he'd tested his shields against all manner of mind-affecting magic, and he knew what it felt like to slowly fall victim to it. Plus, he could lean out the window and see that the citizens of Canterlot were acting normally - which is to say, they were fearful of the giantesses outside the shield. If the sirens' influence was getting through the shield, they'd be affected too.

No, the explanation was simpler. The same quality that had brought him and Cadance together - which had brought him his greatest happiness - was also his weakness. Back when they first met, Cadance had admired his physique and his strong and honest nature - but what had kept them together was the fact that he was the only stallion that could keep up with the Princess of Love's sex drive. Shining Armor was a horny stallion, no two ways about it, and being away from Cadance was weakening his resolve. Even watching his soldiers get swallowed was starting to seem erotic...

The supply of soldiers to Sonata's mouth stopped suddenly. Shining Armor turned his eyes to Aria, who had apparently tired of throwing guard ponies and had decided to help her other friend out in a very different way.

"Come on," whined Adagio, "Don't go slow..." She was leaning her body against the barrier, her arms outstretched, her breasts smushed against the magical dome.

"Oh please," said Aria. "If you didn't want me to torment you, you would have stripped yourself." Inch by inch, she peeled away Adagio's skintight purple top, easing the stretchy fabric over her curves as she pulled it up towards her head. Even though their magic wasn't penetrating the barrier, countless eyes inside Canterlot (Shining Armor's among them) turned upwards to see the hem of the garment slide past Adagio's breasts, freeing the beautiful amber mounds. As Aria pullet the garment upwards, Adagio raised her hands obediently, allowing Aria to slide it over her head and toss it to the ground.

"There you go," said Aria. "All of Canterlot can see that sexy body. Now just stay still and enjoy... and if you whine again, I'll make things harder on you..." She put her hands between Adagio's shoulderblades and shoved her into the barrier, and her naked breasts smooshed against the purple shield like it was a pane of glass. Aria placed both hands on Adagio's shoulders, then ran her fingers down her bare back, caressing her curves.

Shining Armor was staring to sweat. He'd retreated to a separate room, at the request of the princesses, in order to minimize his distractions - but it was starting to seem like that move had been counterproductive. The unfamiliar humanoid form of Adagio was increasingly laid bare, and he found himself growing more and more aroused as he watched Aria touching her, moving her hands down her body, over the sides of her breasts, and down to her hips.

He could just look away, of course. Only... he really couldn't look away. The enormous body of Adagio Dazzle, so slim and lithe yet so powerful, and the cruel, hungry smile of her friend Aria Blaze, were an arresting sight - especially for a sexual omnivore like Shining Armor. He and Cadance had opened up their marital bed to a diverse range of partners - from griffins to minotaurs to twenty-foot dragons - and he couldn't help but imagine the possibilities of such enormous, beautiful bodies...

"Mmm, looks like Canterlot likes the show," said Aria. Her slowly descending fingers had reached the small of Adagio's back, and she circled them around to the front, just below her friend's navel. She dug her fingers into the waistband of Adagio's skirt, and Adagio tensed, anticipating the gentle brush of Aria's fingers on her slit. The most recent round of growth had fired up her cunt, and it was pulsing, dripping, begging to be touched...

And then Aria drew her hands back up, circling her navel and stroking the bare skin of her tummy. "Nooo..." Adagio whispered, "My pussy, please..."

"Didn't I say no whining?" said Aria. She took her hands off Adagio's tummy and lifted the back of her friend's skirt. "Gosh, Adagio, it's almost like you're disobeying me on purpose because you want your big ass spanked." She swung her hand back, hesitating just slightly, then brought her open palm onto Adagio's asscheek. Adagio whimpered, and her body jerked, jostling the shield her tits were resting on. Shining Armor's head rang from the impact, but he was more focused on the feeling in his loins as he watched one beautiful giantess spank the other, smacking her bottom with enough force to bring down a building. Adagio's pained whimper echoed through the city, shaking windows throughout Canterlot; while the shield kept out the entrancing magic of their voices, the sound itself came through loud and clear.

Another spank made contact with Adagio's butt, and she moaned, grinding her hips into the shield. Shining Armor felt that in his head too, but the sensation was more like a sensual massage. Three more spanks made contact, reddening Adagio's ass, and Aria finally relented. "Now then," she said, "Let's get you taken care of..." She dropped to her knees and leaned back against the magical dome, placing her head between Adagio's spread legs. She lifted the front of Adagio's skirt and stared upward at her dripping slit, raising her hand to steal a drop of nectar from her friend's pussy. She brought the slickened finger to her tongue and savored the taste of Adagio's arousal. "Mmm," she moaned, "Your pussy's always sweeter after I slap your ass, Adagio. Just had to smack the sugar out of that cunt..."

"Fuckin' eat me, you petty bitch," growled Adagio. She slid her hips down the circumference of the barrier, bringing her pussy closer to Aria's face.

"Ooh, that's what I like to hear," said Aria. "All that whining was making me worry about you. Just because you're all-powerful, that's no reason to stop being a needy, self-centered slut." She raised her face to the level of Adagio's crotch, leaning her head on the magical barrier, and pressed her lips to Adagio's cunt. Adagio moaned and ground her pussy into Aria's face, coating her mouth and chin in juice. Aria dug her tongue between the wet lips, finding the familiar sensitive spots and flicking the tip against her clit.

Adagio groaned, beating her hands against the barrier as her body spasmed. Shining Armor barely noticed the pain in his head, his mind focused entirely on the shifting mounds of Adagio's tits, the thick nipples flattened against the glassy surface of the barrier. His arousal surged with each gasp and moan that escaped the giantess' mouth, and he felt his focus slipping...

High above the city, her body still draped across the top of the dome, Sonata slipped her hand down her skirt and softly touched herself. Her other hand rubbed her tummy, feeling the small, squirming bulge created by the guards she'd swallowed. They were still moving around in there, writhing happily in their Goddess' belly, their worship growing stronger as they gave her bodies to her completely. Sonata could feel herself growing again - just a few feet this time, but the feeling increased the sensitivity in her pussy. Each brush of her fingers along her slick lips sent bolts of pleasure through her body, making her muscles tense and her body squirm.

Although Shining Armor couldn't see Sonata - not without leaning out the window and gazing upward - he could feel her writhing body against the magical shield. Shining Armor was proficient in barrier spells - perhaps more so than anyone else in Equestria - and he could discern even a gentle brush across its surface. The complex spell fed Shining Armor all sorts of information about what kind of attacks were hitting it (with the unfortunate side effect of headaches when it absorbed particularly powerful impacts), but this was the first time he'd ever felt a huge, curvaceous body writhing against it. When Sonata ground her hips against the dome, he groaned in arousal. When she rolled over, he felt the curves of her ass against its surface.

And then there was Adagio - her tits were bigger than some cottages he'd been in, and through the barrier he could feel every inch of them, the soft hot flesh pressing against his mind, rubbing up and down as Aria's tongue made her body dance. And then Adagio's body suddenly froze, seizing up as orgasm wracked her body. She threw herself forward, draping her body over the side of the barrier, and he felt the lips of her pussy as they touched the shield. He felt them quaking with orgasm, he felt the gush of juices as it squirted in ecstasy. And above, close to climax, Sonata beat her hand against the crown of the magical dome - and her unintentional assault made the shield flicker and fade.

Shining Armor lost it. He fell to the floor, and a weak, guttering glow in his horn signaled the failure of the barrier. It disappeared from the bottom up, like a bubble popping, and Adagio fell forward, her heaving tits looming threateningly over the buildings below. But as she fell, she grew - all of Canterlot was inside the radius of the sirens' power, now that the barrier was down. Within the first second of the city being unprotected, a whole city's worth of love flowed into the girls, taking them up to an even one hundred feet. When Adagio hit the ground, it shook the foundations of Canterlot. A city's worth of ponies, newly filled with reverence for the beautiful sirens, stumbled and swayed as the city quaked.

And the city shook even harder when Sonata hit the ground. She'd been lounging on top of the bubble, touching herself, and just at the moment the bubble popped, she came, her body filling simultaneously with the sensation of growth and orgasm. Crying out in bliss, she fell to the ground, crushing the buildings below her to powder. Canterlot, its cantilevered foundation suddenly bearing the impact of a freefalling giantess, visibly dipped - and for a moment, one might have worried that it was about to topple off the cliffside.

But the seat of Equestrian power was secured by solid architecture and powerful magic, and in the end, it held steady. Sonata, embraced by the afterglow of a powerful climax, rolled onto her side, smiling peacefully. She passed a few calm seconds that way, until she realized that her tummy - which was now more spacious than before - was feeling empty. She flopped her mouth open, exposing her enormous, toothy maw to the bowing populace, and beckoned with a motion of her tongue. The nearby ponies, eager to please their Goddess, began to climb over her lips and into her waiting mouth.

"The shield has fallen!" Luna exclaimed, backing away from the window. "My sister, we must act quickly!" The princesses and the Elements of Harmony had barely started their emergency strategy meeting, but it was clear that it was time for a change of venue. She could feel the influence of the sirens in her mind, like a distant, beautiful song; a being as ancient as Princess Luna was able to resist its power, but she knew her mind, like the shield, would not hold out forever.

Celestia turned to Luna with a serious expression, but before she could speak Rainbow Dash piped up. "Heck yeah we need to act quickly!" she said. "We don't want to be the last ones to pleasure the beautiful sirens!" Her friends agreed effusively, and Rainbow Dash flew to the window, shoving Luna aside. "Oh wow!" she said, "One of them's eating ponies! We gotta get in on that!" The five of them charged through the door, leaving the Princesses behind.

"If Twilight had been here," said Celestia, bowing her head, "perhaps, the Elements..." She huffed. "No, there is no time to dwell on what might have been. Let us retreat to the Crystal Empire." With a bolt from her horn, she shattered the nearest window, spread her wings, and began to fly northward. Luna followed, but as she flew away from the city, she looked back at the sirens. Sonata, with her mouth open, swallowing a mouthful of overjoyed ponies. Adagio, face-down and bare-breasted, leaking pussy juice into the streets of Canterlot. Aria, admiring her handiwork, and turning her eyes toward Canterlot Castle, where a handsome white stallion rubbed his aching horn and stared out at the beautiful titans.

Shining Armor watched Aria approach Canterlot Castle, carelessly crushing buildings underfoot. He had been aroused by the giantesses before, but not he was enraptured, and his heart soared at the thought of being closer to them. Even if Aria just smacked the tower he was in, toppling it to the ground, he would be grateful to have witnessed her power.

But instead, she slowed as she closed in on the tower, and she brought her face to the window Shining Armor was looking through. Her purple iris filled the frame, and Shining's head began to swim. Maintaining the barrier had all but sapped his strength, and seeing his Goddess come so close - and look right at him - it was just too much. He felt his knees give out under him, and he fainted, collapsing to the floor.

Author's Note

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