A different sibling's wedding

Shining Armor's vision slowly begun to return to him, as he awoke to find nothing but darkness surrounding him...

He lit up his horn, but he still couldn't see very far.

"Hello?" He called out, hoping someone would respond, but nothing came.

"Is anypony here?..." He asked, only to bump into a reflection of himself.

The captain felt a cold shiver down his neck, as he was trapped in a location with seemingly no entrance or exit.

"What is this place?..." He stuttered.

"The caves beneath Canterlot, once home to greedy unicorns who wanted to claim the gems that could be found inside." The image of "Cadance" on the glass revealed, startling Shining Armor.

"And now... your prison."

"HELP ME!!!" Shining screamed, to no avail.

"It's no use! No one can hear you, and no one would ever think to look for you either. Most ponies have forgotten that these caves even exist, which is why they are the ideal place to keep the ones that try to interfere with my PLANS."

"Wha- what plans?..."

...

"The plans I have for your sister of course."

Shining Armor's eyes widened in horror, and as they did, a boiling rage fumed from within.

"Don't you DARE lay a HOOF on my little sister! You... YOU MONSTER!!!"

"Only way to-"

"She is one of the most special ponies in my life and you BETTER stay away from her you disgusting CRETIN!!!"

"Only-"

"Scum like you is why I always make sure my sister stays out of trouble!!!"

"Are you do-"

"So you STAY AWAY FROM HER!!!" The captain breathed in and out after his dramatic declaration.

"Well you know you are really taking all the fun out of this, so I'm just going to..." "Cadance"'s image begun to fade away.

"No! Don't you DARE LEAVE ME HERE!!!" Shining Armor blasted the crystal, which bounced all over the walls.

Until it hit and destroyed one of them, revealing Cadance from inside.

Enraged, the captain charged to tackle her.

"NO!!! Wait!" The princess begged, but Shining Armor pinned her to the ground.

"Please! Don't hurt me... Shining Armor it's me!" She insisted, but Shining stared at her doubtfully.

"Please! You have to believe me! I've been imprisoned like you, the Cadance who bought you down here was an imposter."

"A likely story! How can you PROVE it?"

"Listen to me! The imposter's magic was green! Mine's blue! See?" Cadance lit up her horn to reveal blue magic.

Confused, the captain let her go, as he remembered that one detail...

"What was that dance you did with Twilight all the time?..."

"It was sunshine, sunshine lady bugs awake. We did it all the time."

Shining Armor took in a deep breath, as he believed that she was telling the truth...

"I would always take care of your sister, you believe that right?..."

"Yes... I believe you, and I'm sorry..."

"It's ok..."

"Come on, we don't have any time to waste. We've got to stop her!" Shining Armor declared, as he and Cadance both rushed out of the caves to try and save Twilight...

Meanwhile, "Cadance" walked up to a mirror and placed a rose on her head.

"This day is going to be perfect, the kind of day of which I dreamed since I was small........ Everypony will gather round, say I look lovely in my gown. What they don't know is that I have fooled them all." "Cadance" sung, as her eyes glowed green.

"This day was going to be perfect, the kind of day of which I dreamed since I was small....... But instead of having cake, with all my friends to celebrate my wedding bells they may not ring for me at all." Cadance sung, as she stared into her reflection as Shining Armor looked on.

"I could care less, about the dress, I won't partake in any cake. Vows? Well I'll be lying when I say, that through any kind of weather I'll want us to be together. The truth is I don't care for her at all! No I do not love the bride for my heart is dead inside! But I still want her to be, all mine!" "Cadance" sung, as she smiled maliciously into the mirror.

"We must escape before it's too late, find a way to save the day! Hope? I'll be lying if I say, I don't fear that I may lose her to one who wants to use her! Not care for love and cherish her each day! For I oh so love the bride oh in my heart she does reside. Oh, Twilight Sparkle, I'll soon be by your side!" Cadance sung, as Shining Armor pushed the minecart below.

When they reached the bottom, they fell off, and Cadance used her wings to fly herself and Shining to the top.

Meanwhile, the wedding has officially begun, as the doors opened for the bride to enter the alter.

"Finally the moment has arrived, for me, to be one lucky bride." "Cadance" sung, as she made her way to the alter.

"Oh the wedding we won't make she'll end up marrying a fake, Twilight Sparkle will be......"

"Mine, all mine. Heh he he he he he he."