Some 20 years ago on a small island near Cerluean city there were 2 pokemon. A tall one and a smaller one. " I sense something." The tall one said.
" So you feel it to, brother?" the small one said. The tall one walked out of it's cave. " May I leave now?" He asked.
" It's not your time yet, brother." The small one told him. The taller one turned and walked back in. " Fine." He exclaimed.
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Somewhere in Unova a group of two pokemon were united for a meeting waiting for the third one. " Where could that idiot be?" said a gray one. " He's probably racing some other pokemon." A white one said.
" That damn kid needs to learn some manners." The gray one said. A newcomer came, this one black. " Hi guys!" This black one said. " Sorry I'm late."
" Save it! Mew told me there'll be a conflict in 20 years. She also said something about us having to fight alongside humans. So prepare yourselves."
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Somewhere out in the middle of the ocean Another 3 pokemon met just by fate. " Oh it's you guys." a white and blue bird creature said. " Lugia! My friend!" A blue whale like pokemon said. A Green dragon silently greeted Lugia. " A threat will come in 20 years." The dragon said.
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Deep in the volcano on Kazan island a pokemon sleeps. " Sorry my friend but you are destined for evil things." A small Green pokemon said. Just then another small pink pokemon came. " Oh hello there." The green one said. " Good morning I see visiting Groudon before he... You know." The pink one said. " Yes but this is his destiny, and no one can escape their destiny."
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A giant blue and white pokemon sighed. " If anything serious happens I can just find someone worthy and go back in time to fix stuff. Calm down Palkia." It said.
" Fine I guess you can sit this one out but if Mew needs you you're going ok." a white and pink one replied.
So they waited and when the time finally came the pokemon and their chosen trainers lost. The Blue pokemon that was so lazy didn't participate in the battle, but after years of searching he found a young girl that was determined to change the world. They set off on their journey through time to change the future.