Pokémon: To Be a Pokémon Master

Getting to the Heart of it All! (1x8)

:

Ash, Pikachu, and the others have come to a town where strange phenomenon have allegedly been occurring in various houses. In order to solve the mystery, the group searches one of the affected houses themselves, where they spot a Banette. The Banette has been taking all kinds of objects from the houses it's broken into. What could its goal be?