Cool parent Greg distracts CB from being a good teacher to help his son Weasel receive extra credit, while former Principal Ball is upset at Principal Glascott when he approves the use of Ball's parking spot as a community garden.

Coach Mellor deals with jealousy issues after learning Julie is friends with a handsome doctor. Meanwhile, Glascott appoints CB to be substitute principal after his surgery, but needs Lainey to solve a problem with the mean girls of William Penn that he can't.