The Rookies are still mired in teen-age drug rackets which seemed to be the case for most of the last season. When a youth leaps to his death, the enlist the aid of another kid to trace the drug source.
Mike is severely wounded and Terry is taken hostage by members of a gun stealing ring trying to gain freedom from their captured leader.
Deeply moved by a young girl's plea for help shortly before dying, Terry takes vigorous action to learn the girl's identity and to uncover events that led to her mysterious death. The trail leads to a pusher and two brothers who apparently drugged the girl, then tried to assault her. She was fatally injured by a car running from them.
Jill is working in a womens prison, fighting an outbreak of diphtheria. In order to protest for better food and working conditions, inmates take Jill Danko and Dr. Malcolm hostage.
Songs: (Unknown artist) -- "The Rookies Show Opening"
Young crooks Pat Stevens and Glen Barton rob ticket agent Brewster and shoot rookie Chris. The scene is witnessed by mailman Charlie Brooks, who is adamant about not getting involved. Eventually his wife, Nadine, and daughter, Stacy, encourage him to cooperate with the rookies, and finally, the criminals are apprehended.
An attractive young policewoman becomes the victim of bitter resentment with the department when her protective male partner loses his life in a shootout.
A rookie accidentally overpowers a professional assassin and is named ""hero"". The assassin vows to kill the rookie and escapes with Jill as a hostage, offering to exchange her for the rookie.
Three murdering robbers trap Terry Webster and Chris Owens in a department store when the cops come across them during a routine check. Their police car is stolen, and the telephone wires are cut inside the store as the cops face a shootout with desperate men.
Former Vietnam helicoptor pilot Mike Danko is kidnapped by a POW who is focused on revenge.
The mother of a doctor who works in the same hospital as Jill is mugged and dies and the doctor takes it upon himself to get revenge.
A gambler kills his creditor and is witnessed by Jill Danko whom he and his accomplice must now do away with. Another episode dedicated to nurse Jill Danko.