After battling in the Pokémon League Tournament, Ash and his friends return to Pallet Town for a hero's welcome. Team Rocket, as usual, ruins the party with another bumbling attempt to steal Pikachu. Professor Oak makes a request for Ash, Brock and Misty to go on another journey to bring back a mysterious looking Pokéball for him. On their way, Ash is in for another surprise when his Pidgeotto evolves into a Pidgeot just in time to save the day!