My Little Pony: Equestria Girls

Subs Rock (4x6)

Air date: Aug 05, 2017

Principal Celestia decides to fill in as substitute teacher for Twilight and Rarity's class. However, she is constantly interrupted by situations that include a cafeteria emergency and Rainbow Dash kicking a soccer ball against the outer wall of the building. By the time she takes care of all the problems, she is exhausted and the class ends.