Thousands of years ago, The Original one battled a Power so great that it forced him into a eternal slumber. He created the beings of Time and Space to Govern Reality in his Absence. Areceus, the one who claims to be the Original one, had someone who rivaled him in power. The Universe that exist today, once lived in harmony with another universe. Each Universe being exactly alike. They battled to eliminate the other universe. So one could Thrive, the balance had been broken and eventually the aside Arceus Created won and wiped out all other Universes. Mew was deeply sad and moved that both realities stay in existence, in order to do this Mew would have to pin his soul to the link that put the two together. This being the Tree, and both Universes lived in harmony, but both Arceus and his rival fell asleep for a long time.
Present Day........
Team Tranqua has struck again, they have already combined the forces of Rocket, Aqua, Magma, and Galactic. There Goal. To rule the world, using the legendary pokemon.
The disturbance had caused all of the Other Universes Powerful Pokemon to Awaken from there slumber. There Spirits now Alive, they have been reborn, and now populate the world in harmony with the other universe. The New Legends, and the Increase in Aura all across the planet have given cause to a new resolve. One to become all that you can be, or two.....to take that right away from everyone else.