Only By Night

"Ahahahahaha ha haha" Nightmare moon cackled as she stood on the north west corner balcony of the castle of the Two Sisters, she shot a beam of Powerful energy towards the roof ripping a great tear through the glass ceiling, causing huge shards of glass to shatter on the ground near to where Princess Celestia was standing.

Celestia flew up just as Nightmare was getting ready to fire another beam, narrowly escaping the massive jolt that punched another great hole in the building work, the two Alircorns were now stood facing each other across the great hall. Luna's fixed gaze upon her sister was wild, it was nothing like her sister had ever seen from her in all of her life.

"Luna I will not fight you! You must lower the moon, It is your duty!!"  Celestia cries out of breath and exclaims as she desperately tries to reason with her.

"Luna? I am Nightmare Moon! I have but one royal duty now... To destroy you" She replied in a frightening defiant shriek.

Nightmare Moon shot a beam straight at Celestia, again narrowly missing her as she flew up into the sky. At this point the poor princess was running out of options, and to make matters worse the inevitable point of no return had just crossed its threshold for the dear sister. She had problems in the past as siblings but this was an oversight she as a ruler could not overlook as she had to consider the safety of the Ponies of Equestria.

"And where do you think your going?" Luna bellowed in a deep commanding voice.

The fight was escalating out of control, the two Alicorns were now soaring around the castle grounds in a dangerous game of cat and mouse, Nightmare was beaming her energy rays at full capacity now. The beams taking huge chunks out of the castle walls as they tried to hit their target, Celestia was only just quick about enough to dodge them, but she was not strong enough alone to defeat outwitt her sister.

The White Alicorn flew under a falling pillar causing her trajectory to alter upwards towards the sky, this was Nightmares window of opportunity, and she seized it. With all her might she shot a beam straight at Celestia, it was a direct hit.

"Ahhhhhhhhhhhhhhhhhhhhhh!!!" She screeched, a searing, burning electric pain jolted right through the princesses body causing her to sieze up and she plummeted back to earth, straight through the hole in the castle roof where Luna had previously tore a hole through it.

Nightmare let out an almighty cackle as she flew beneath the moon, everything suddenly fell silent. For Celestia this was a step too far.

'Had my dear sister just try to kill me?' she thought.

And what an alarming thought it was indeed, for this could only be resolved now in one way now, and she knew what head to be done, although she had put it off to the very last moment. The elements chamber was just beneath her, all she had to do was use her remaining magic to open and unlock its contents. So with what she strength she could muster, she stood up to face Nightmare once more.

"Oh dear sister, you have given me no choice but to use these."

Celestia shot a beam directly at the floor, causing the whole room to shake. Suddenly to slabs pulled apart and a great pillar with 6 extended arms and a moon orb perched on the very top rose up from underground, at the ends of each arms were six brightly colored gems. The White alicorn channeled them forming a swirling ring  around her body, beaming rainbow lights were radiating all around the room as they emitted from it. With all of her might, Celestia shot a giant beam at Nightmare moon as she simultaneously returned the favor.

The two beams met in the middle, starting a sort of tug of war between the two opposing energies. But Nightmares magic was not powerful enough to overcome these special gems, Luna was holding on for dear life. Ovcercome by the jealousy, the rage and the longing to rule over the kingdom. With one final push the White alicorn forced as hard as she could and with one huge jolt, Luna headed straight into the sky at such extreme speeds.

All she could make out in her blurred vision as she ascended into the sky, was the houses over ponyville and the caslte becoming ever smaller from below. And before she knew it, Luna was encased deep within the moons core. It was cold and dark inside, with little space to move around at all, Nightmare quickly feel into a deep sleep, but was still conscious of her thoughts. The enchantment that had been placed upon her, meant that she would also be awake during this period. Not Celestia's doing I can assure you, but rather an after effect of this spell.

Nightmare started to fade and gradually diminish into her consciousness, remaining forever dormant until the day her banishment is up. As Luna began to reflect, the pain that she had just caused felt worse than the jolt of energy she had given poor Celestia. She was in agony, and the feeling grew inside her. For the chance to be forgiven, to be absolved, to be loved once more.

Twilight suddenly woke up, the sheets sliding aisde from her as she sat bolt upright.