Pokémon (1997)

S11E04 The Keystone Pops!

Title: The Keystone Pops! Plot: When Ash's Buizel accidentally wrecks the Hallowed Tower, it releases a Spiritomb that begins terrorizing Ash, Dawn, Brock, and a nearby settlement. Jessie reveals to the Spiritomb that Ash is a descendant of the Aura Guardian who once sealed it away, and that he happens to have a Pikachu. Determined to contain the Spiritomb, Ash, with Pikachu by his side, embarks on a mission to reseal the malevolent spirit within the Hallowed Tower.