Pokémon - Season 8 Episode 20 Showdown at Linoone Gotta catch 'em all!
Overview: While waiting to eat lunch in the woods, a Linoone comes by and steals two of May's Poké Balls. They find out that the Linoone belongs to a boy named Kimmy. Kimmy helps the heroes get the Poké Balls back before Team Rocket gets a hold of them and Linoone.