Martin (Martin Lawrence) discovers that he is still legally married to Pam (Tichina Arnold) and must appease the justice of the peace (guest star David Alan Grier).
With Lisa and Malik home with the new baby and Janine's plane status still unknown, tensions are very high; Ella and Miranda welcome the couple and the newborn home while Curtis, C.J., and Calvin are elsewhere.
A heartbroken Jamie (Jamie Foxx) has a romantic encounter with a woman (guest star Golden Brooks) who resembles his ex-girlfriend Fancy (Garcelle Beauvais).
When Dave's amateur band loses its lead singer just before a gig, Tina offers to fill in; Marty quickly regrets letting his needy boss crash at his new place.
Concerned about the safety of a treehouse Calvin's building for Grover, Dave recruits Marty to supervise covertly; an innocent mistake on Malcolm's part leads to a heated bake-off between Tina and Gemma.
When Tina and Gemma get more than they bargained for in a revealing art class, Calvin can't hide his jealousy and takes drastic action; Dave, Marty and Malcolm team up to crack the case of an unfinished mystery novel.
Dave earns Calvin's respect when he thwarts a robbery at the barbershop, until the recognition goes to his head, and he starts exaggerating the truth; Marty invites an anxious Gemma to give his new stress-busting hobby a try.
An uptight cop (Samuel L. Jackson), the self-appointed watchdog of his neighborhood, strongly disapproves of the interracial newlyweds (Patrick Wilson, Kerry Washington) who just moved in next door. He becomes increasingly hostile toward the innocent pair, going to great lengths to force them out of their home. The situation changes when the young couple decide to fight back.
Drug tycoon Nino Brown (Wesley Snipes) and his minions, known collectively as the Cash Money Brothers, have rapidly risen to the top of the New York City narcotics trade. Under Nino's heartless leadership, the drug operation has grown into a multimillion-dollar empire. Scotty (Ice-T) and Nick (Judd Nelson), two police officers who know their way around the streets of Harlem, aim to bring Nino and his cohorts down. To do so, though, they'll have to play by Nino's rules and go undercover.