Alvinnn!!! And the Chipmunks - Season 1, Episode 15: Tree House/Saving Simon
This series reveals Alvin, Simon and Theodore, a group of squirrels who are taking a series of powerful adventures. These squirrels are brothers who tour the world as famous rock stars and still go to school. Alvin, Theodore, and Simon begin their adventures by presenting a host of sounds and big characters as they tour through adventures on that stage.