On Mandarin Island, Pokémon become extremely mean and start disobeying their masters. When Pikachu runs off, Ash and friends join up with Officer Jenny to discover who the culprit is. After much searching, our heroes learn that Butch and Cassidy have amplified a Drowzee’s hypnosis to control all the Pokémon! In a shocking move, Jessie and James team up with our heroes and overthrow their evil rivals.