Furilo and Daniels clash over a crime sweep on the streets. Renko is declared a hero after rescuing children from a burning building. A woman who fears her boyfriend lashes out at Goldblume and a judge for allowing him to go free. Hill confronts a bully undercover cop who attacked Renko.
Calletano tries to look younger by wearing a toupee. Tataglia asks Bates for advice on a possible romance with Belker. Furillo is ordered by the court to shut down the crime operation on the streets. A case of gang members harassing a local store owner causes Goldblume to lose his temper.
Davenport takes Furillo up on his offer to get married. Hill, Renko and Bates go undercover on a bus. Belker works to try and get his mind off his deceased father. Coffey takes a lie detector test to prove he is innocent of killing a prisoner. LaRue gets Vic a gig at a seedy nightclub.
Sal Benedetto has a plan to take down Rollie Simone and isn't about to do it by the book. Leo is helping a drug addict called Rico get clean. Joyce and Henry interrogate a man with multiple personalities who may be a murderer. The TK4600 robot is on loan to the station.
The station hasn't received any pay, so when Renko & Hill find a suitcase filled with illegal lottery money, they are tempted to keep it for themselves. Reggie and his multiple identities have escaped from an institution. Washington is under cover, trying to lure loan shark Simone into a trap.
Following a deadly shooting at a gay bar, an off-duty cop, who is the only witness, is reluctant to come forward for fear that his homosexuality will become public. A guy impersonating the "Cisco Kid" is arrested twice for causing a disturbance. Faye is depressed about having to go through her pregnancy alone.
Frank gets the local gang leaders together to lay down 'Furillo's Law' in light of the mayoral campaign. Bobby Hill wins 100.000 dollars in the Lottery's 'Rainbow Run off'. Coffey and Bates interrupt a fight between two female mud wrestlers and their male spectators, leading to a double date for Joe. Belker is undercover at a fish market and gets in trouble with Deputy Chief Mahoney.
Benjamin Fisk is taken hostage by Hector Ruiz while staying in a ghetto to boost his campaign. Mahoney continues his crusade against the cops of Hill Street. Bobby is giving away his prize money and losing friends with his new attitude.
Joyce's client Kiki goes out of his way to prove his innocence. Bobby Hill is given the day off which he uses to get rid of even more money and eventually manages to sort out his mental state. Fisk's triumphant return to the Dante housing project turns into a tragedy. Deskbound Belker is tasked to give a lecture at the precinct.
When Ozzie Cleveland enters the race for Mayor, Chief Daniels orders Furillo to put four officers undercover at Murray's Wonderland, a triple X store in Cleveland's precinct. Officer Perez mistakes a boy with a toy gun for a burglar and shoots him. To avert a scandal, Daniels suggests the boy's mother be charged with negligence.
Chief Daniel's campaign for Mayor is ruined by several factors including a TV debate debacle, a precinct visit from single mom Fay, a murder at Murray's Wonderland and the dismissal of the Robson case. Renko ends up with green dyed skin after busting the 'Emily Post bandit', who swiftly escapes and takes a hostage.
Chief Daniels' campaign for mayor hits a turning point. Members of the precinct attend the funeral of the boy who was accidentally shot by Perez. Furillo consoles Perez and his family. Hill and Renko arrest a mentally ill man who believes that he is running for mayor and is causing disturbances.
Bobby represents the Hill in a police boxing match against Al Simmons. Belker books a paraplegic for spray painting his car, only to find out the guy did it because the car was parked in a handicapped zone. A shady aspect from Hunter's past turns up among the evidence found at a busted bookie joint.
Belker goes undercover in a wheelchair and finds himself being shadowed by actual wheelchair bound Gaffney. J.D. is sure Hunter attempted suicide although the latter won't admit it. Bates and Coffey catch missing guard goose Honkey red-winged at a grocery store. Bobby is preparing for one last boxing match before he retires from the game.
Three Russian visitors receive a tour of the Hill and a good look at police procedures. Marty Nichols brings in J.D.'s brother-in-law on charges of solicitation. Belker is working undercover as an ambulance attendant.