Rico and his visiting dad, a retired boxing champ from Brooklyn, revert to their old verbal sparring as Rico—who wants his Pop to see that he's left behind his bad-boy days—tries to figure out the real reason his widowed father has come to see him and brother Angelo. And Rico's natural sex appeal helps him track down an assault suspect.

The booking of a drunk clown and a mishap involving airplane lavatory ""residue"" pale in comparison to what becomes the day's priority for the sheriffs—finding a ruthless murderer. Barnes hopes an ex-con now in the business of gang intervention can lead them to the killer, and, during a frightening confrontation, Rico's respect for his training officer increases.

As Rico just gets used to being tourmented by Barnes; Barnes suffers from a dizzy spell, he is put on desk duty. Amonte gets a new temporary Training Officer, a tough, brassy senior deputy Ryan Layne - a twelve-year veteran.

Rico's sheriff's training gets into full swing as he and Barnes handle a melee of calls around the city of Los Angeles, from rescuing a little girl who got stuck in a refrigerator to helping a woman whose mother thinks she's possessed. Meanwhile Williams gets assigned a tough new T.O., and Jablonski is given a new trainee after his first one quit. And, in order to join the department's boxing team, Rico has to first fight Jablonski.