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