Mr. Ballard is fired from Sydney and Michael's school after Darryl encourages him to stand up for himself when the budget for his school musical is cut. Darryl hires him on at the vending comapny, but he brings productivity way down. So Darryl decides to go to the school superintendant to try to get Mr. Ballard his job back. He ends up striking a deal where Mr. Ballard can do his school musical if Darryl funds it. At the last minute, the superintendant sells all of the school's musical instruments, so Ballard puts on a take-off on ""Stomp"" called ""Whomp,"" and all-percussion show using sports equipment and trash can lids. Everyone loves the show and pressures the superintendant into giving Ballard his job back.

Darryl and Yvonne's anti-drug lessons to their kids nearly go up in smoke. Darryl is having a bad day: Yvonne's freeloading sister Shari is moving into an apartment in their neighborhood. Then Shari comes over to his place and tries to steal a jacket that belongs to Sydney . Darryl struggles with her over it and a joint falls out of a pocket. That throws Darryl and Yvonne for a loop, but they're even more shocked when Sydney reveals to whom the jacket really belongs

Darryl's mother, Hattie Mae, wrests control of Thanksgiving dinner from Yvonne, forcing Darryl to make a stand. Also, Shari bets Milsap and Dave that she's more football savvy than them.

Darryl is shocked to learn his parents have split up and attempts to facilitate a reconciliation. Meanwhile, Michael attempts to choreograph Sydney's talent show in an effort to make a lasting impression on her girlfriends.

Sydney receives a new computer, but is warned not to go into any chat rooms, which she does.

Milsap and Darryl attend their 20th high-school reunion, where Milsap learns that he became a father after the 15th reunion. Also: Darryl reunites with a former girlfriend.