A scholarly substitute teacher (guest star Orlando Jones) makes Chris' (Tyler James Williams) life a living hell by holding him to a higher standard than his classmates.

Meanwhile, Tonya (Imani Hakim) learns that she can always get her way by accusing Drew (Tequan Richmond) of hitting her, and Mr. Omar (Ernest Thomas) gets on Julius' (Terry Crews) last nerve when he takes advantage of his neighborly generosity. Todd Bridges plays Doc's nephew, Monk.