Joe works out an alternative payment plan when he begins dating the mom (Krista Allen) of one of his students, which unintentionally earns him a reputation among the other mothers in the neighborhood as a tutor-prostitute. Meanwhile, Zander (guest star Sterling Knight) and Lennox decide to skip college and drive around the country in a motor home-which doesn't sit well with "cool" aunt Mel. And Ryder introduces his vegan girlfriend to the joys of meat.