The adventure explodes into action with the debut of Mewtwo, a bio-engineered Pokémon created from the DNA of Mew, one of the rarest Pokémon of all. After escaping from the lab where it was created, Mewtwo is determined to prove its own superiority. It lures a number of talented Trainers into a Pokémon battle like never before—and of course, Ash and his friends are happy to accept the challenge!