Pokemon Season 12 - Episode 601 – A Faux Oak Finish!

As the Twinleaf Town Festival continues, Ash and friends are surprised when they find that one of the upcoming Pokémon courses is to be hosted by none other than Professor Oak. Trouble starts brewing, however, when Team Rocket brings back an old plan: to disguise James as the professor. The real Professor Oak goes out and finds that some Quagsire and a Politoed caught him. But later, Brock's Croagunk battles Politoed and wins that eventually releases Professor Oak. Professor Oak gives the Lombre a Water Stone to evolve.