Geneva has got a job as a music teacher at the High School. Mark tries to show her the ways around the school. They are getting a new principal and the rumour tells that she loves to fire people. It turns out to be Mark's sister's best friend, P.J. Moore. She says that Mark is the kind of teacher she hates. Mark's schedule includes Driver's Ed. and he's not very happy about that. Mark drives the Driver's Ed. car home. Darnell takes it for a ride without Mark's promission. He accidentally hit a lawn mower and gives the owner Mark's name. The owner is going after the school. Mark dresses up as a woman to play the role as the principal when they man is coming to the school. He wants a date with ""P.J."" (who Mark is pretending to be) at a karaokee bar. When they meet there, Mark gets him to sign the settlement. Then the real P.J. shows up. Mark tries to hide from her, but after a while she sees him. She realises that Mark really loves teaching and doesn't fire him. (thetvdb.com)