When Goh wakes up from a nightmare, he finds a Grookey clinging to his arm. He tries to catch it, but his Rotom Phone says it already has a Trainer! The question is who, so Ash and Goh set out to find Grookey’s real home. After watching surveillance ... (more)camera footage from a local shop, they discover that Grookey came from Team Rocket’s Rocket Prize Master machine…and right on cue, the villainous team arrives and returns the Pokémon to its Poké Ball! But Grookey manages to escape, and when Team Rocket reappears, Grookey destroys the Poké Ball—giving Goh the chance to throw his own and catch Grookey for himself!