Pokémon: Mewtwo Returns (2000)

Mewtwo must confront its past and decide whether it can trust humans again. However, trouble arises when a group called Team Rocket discovers the sanctuary and plans to exploit the inhabitants. With the help of Ash Ketchum and his friends, Mewtwo sets out to protect its new family of Pokémon and prevent Team Rocket's evil plans. With exciting Pokémon battles: If you want to delve deeper into Mewtwo's story, this is your movie!