Mo becomes the prime suspect when chemistry teacher Mr. Bringleman's gradebook is set afire after an difficult test. Meanwhile, the school's drama society is setting up a performance of "Inherit the Wind". TJ believes in Mo's innocence and becomes his lawyer at the school trial.
In order to keep Deion off her back, Yvette fakes a relationship with Mo and begins developing actual feelings for him. Meanwhile, Floyd makes Marcus work at his roofing company in order to teach him the value of a college education.
TJ helps Marcus get closer to a girl by writing love letters for him to send to her. She then also asks TJ to write poetry for her to send back to him, leading to TJ falling for her as well. Meanwhile, Yvette teaches Mo cooking.
TJ's skills in chess gives him the chance to play against a computer, Socrates that's supposed to be unbeatable in chess and Marcus plans to win big on money bets.
The Henderson men try to surprise Yvette by building her a bathroom of her own. Meanwhile, TJ and Mo do an assignment together where they have to pretend to be a married couple.
Floyd buys a time slot to have a commercial for his contracting services shown on local TV. T.J. takes things too far when he inadvertently gets the commercial shown during the Super Bowl!
TJ tutors the basketball team's inept star player in World History. Unfortunately, he becomes so engrossed in the history of Ghandi that he considers quitting the team.
While Mo's parents go on the honeymoon they never had, he becomes a house guest at the Henderson's, setting off some arguments between the family members.
