Pokémon S13E11 - Keeping in Top Forme!

Continuing on to the Grand Festival, Ash and friends find a girl named Marley in a river and swiftly bound for a waterfall. Brock rescues her, and they find out that a legendary Shaymin is with her, injured by a group of thugs who want to steal it. Team Rocket, who are the ones responsible, set out in an attempt to nab Shaymin once more. Ash and friends, knowing the danger, join Marley in helping to keep Shaymin safe while returning it to its friends.