They day finally came that the Solar Princess was to execute the Changeling Queen. It was to be a public execution. It was to show the world that nopony was to mess with the Solar Princess, and those that did were to be dealt with.The Lunar Princess tried to plead one last time to 'Stop this maddness.' But the Solar Princess heard none of it, and continued on.
The Solar Princess went up to the bound and waiting Queen. She made an announcement to all that watched about her power and that 'none shall question it.' She raised her horn and began to charge it. Once charged she lowered it to the Queen and spoke, "And Thou Shall Die!" As she said so, a dark blur flew into her, knocking the Solar Princess away and into a wall. The magic bolt the Solar Princess had charged and that was aimed for the Queen was set off, flying into a tower and completely obliterating it.
When the dust had settled it was seen that the Lunar Princess was the dark blur. The audience was in shock of what had occurred. The Solar Guard was the first to recover and set about to apprehend the Lunar Princess. They were never able to get moving as the sky came black as the pegasi of the Lunar Guard came flying down out of the skies. The unicorn and earth ponies of the Lunar Guard flooded in to the arena. Members of the Solar Guard started to betray they comrades, as they were agents of the Lunar Guard. The Solar Guard was trapped, surrounded and out numbered. More than five hundred members of the Lunar Guard was now in control of the arena.
The Solar Princess finally recovered from being hit into a wall. She noticed the dark colors that filled her white arena, over five hundred of them. But there was one that caught her attention. The Lunar Princess, stood before her, in full battle armor.
"Luna!" Celestia yelled getting back to her hooves. "What hast thou done. Dost thou deny thee sister?" she asked reverting back to Olde Equestrian.
"Thou art not mine sister," replied Luna. This ticked Celestia off. "Thou sister wouldst never doeth this. Thou sister art kind and caring. And thou art not her. Since mine return, thoust changed, for the worst. Thoust restrict'd freedoms, had many innocent lives innocent lives sent to their death. And I will not standeth by watching thou doeth this. I will not leteth thou harmeth another." With that, Luna undid Chrysalis' bindings with her magic. "Go and survive," Luna said to the freed Chrysalis.
Celestia watch as she did this. "NAIVE!" She yelled. "Thou doeth not know what thou hath done. If thou art not mine sister, thou art my enemy. Have at thee!" She said charging and releasing a magic blast.
Luna shielded herself against the blast. "We here to relieve thou of thy royal duties. Ye art not fiteth to be a Princess."
Celestia's mane began to become fire, "Then thou will not hast a princess, thou wouldst hast a Queen! Not dark but beautiful and terrible as the dawn, treacherous as the Sea, stronger than the foundations of the earth. All shall obey me!" With that, Celestia's pure white coat became blood red, her now fiery mane became an inferno.
Luna had hoped that Celestia would not do this. The Celestia she knew was long gone. And now the pony that stands before her is Solar Flare.
"Haveth your way!" Luna cried as she ripped off her armor. A swirling black mist began to form around her. When the mist subsided stood a black mare that everypony knew, Nightmare Moon.
Solar Flare, after seeing this, shot off some blasts, which Nightmare Moon easily deflected. Nightmare Moon took to the sky and fired at Solar Flare. Solar Flare dodge and the blast went into the stands. Thankfully there was nopony there as the Lunar Guard escorted everypony out. Nightmare rushed to Solar firing her horn, which Solar Dodge and flew off.
The sky above the Castle was full of magical blasts that missed their mark or were deflected. The two powered alicorns flew towards each other lighting their horns and firing, passing each other, and coming around again. Their aerial battle lasted for some time. They came around and were facing each other. They each let out a stream of magic at the other. The two beam met at the center, each pushing against the other. Each powered alicorn put more energy into their magic stream. They were like that for several minutes, the meeting point slightly moving back and forth, but remaining in the center. The energy at the meeting point, from the energy of the magic being put into it, eventually exploded sending both powered alicorns flying back. The two tumbled out of the sky, and crashing into the ground, the energy drain from them.
Luna awoke staring at a blue field, with green borders. She got up and took note of her surroundings. She was in a forest, the amount of trees and the devoid of ponies told her that. It was still in the afternoon, not time for the sun to set or the moon to rise. Their powers are to lift and lower the bodies, their progression across the sky is their own. A freshly dug trench, along with newly knocked down trees, that lead to her, now standing in a pit, showed she fell with a force.
Luna heard a stream not too far from her crash site, and went to investigate. Upon arriving, she noticed her reflection. It was that of her when Nightmare Moon was expelled from her, her low magic state; unlike when she gave Twilight all her magic and had none. No doubt her sister would be like this, and her pink mane to. Luna held in a laugh as she thought about Celestia's subjects seeing her in her low magic state, with a pink, non-ethereal mane.
After using the water from the stream to clean the dirt and mud off, and the time it took, Luna now had enough energy to to fly. She took off and headed to the rendezvous point. Time for Part Three.