Pokemon Episode 521 – The Keystone Pops!
On the way to Solaceon Town, Ash and Dawn are doing some late night training with their new Buizel and Aipom. During the battle, Buizel accidentally destroys a nearby stone tower, and unleashes the pokémon Spiritomb. Spiritomb attacks them before flying away. The next morning Ash and the others arrive in a nearby village that was attacked by Spiritomb. They meet an old woman who tells them the tale of Spiritomb. After realizing the trouble they have caused, Ash, Dawn, and Brock decide to help seal Spiritomb away. Meanwhile Team Rocket disguise them selves as psychics in order to capture both Pikachu and Spiritomb.