Ep. 88: Pikachu Re-Volts

88

Butch and Cassidy attempt to control Pokémon with a large antenna sending out signals from Drowzee. This causes Ash's Pikachu, Misty's Togepi, and all of Jessie and James' Pokémon to turn against their masters because of the effects. They're going to have to team up to save their Pokémon, during which Togepi learns Metronome from Drowzee. (Source: Wikipedia)