The new Lieutenant arrives at the precinct, and everyone soon learns that she and Hobbs have a romantic past; A cable installer confuses Toni for singer Tamela Mann.
Toni faces a moral dilemma when the administrators at her school decide to change the students' standardized test results; Hobbs' mother brings her new fiance for a visit.
The Manns' cousin Barry comes for a visit and goes undercover to help break up a crime ring, rival detectives compete with Hobbs and Mann to solve the cold case.
When his parents go out of town, DJ rents a room out to an elderly party animal; Hobbs and the Lieutenant pretend to be in a relationship when she tries to outshine her recently-engaged sister.
Poppa Bo comes to visit and teaches Tasha to fight, getting her into trouble at school and home; when Daniel accidentally leaks private information to the whole police precinct, the Lieutenant comes under fire.
The Manns give Terri money for her winning business idea, but her management style is less successful; A young man shows up at the precinct, claiming to be Hobbs' son.
