In the introductory episode of the series, the presence of several street gangs contributes to a tension-filled atmosphere. The Rookies are assigned with the challenge of maintaining order amongst the rivaling street gangs, with Willie Gillis arising as the mediator between the gangs.

Terry and Willie, while doing routine spot checks, uncover a petty thief involved in a larger fur scandal. He agrees to give information against the two criminals who orchestrated the plan. However, due to a technicality, their trial is dismissed and they set their eyes on revenge. After several attempts to drag him back into their world of crime, Webster puts an end to the two felons criminal actions.

Willie, being in the wrong place at the wrong time, is struck by a bullet in the leg by a criminal wearing a monster mask. He is left paralyzed temporarily. Further investigation reveals a criminal's passion for horror films. As the case becomes more complex, Terry and Danko track the small-time crooks down to an auction, where they foolishly try to escape the law.

Terry and Willie become involved with Brother Toby, a former drug addict now turned evangelist. They admire his mission to help other junkies become sober. He is framed by the father of one of his followers, because of the father's disagreement with Toby's religious beliefs. He is put in the situation where it appears that he violates his parole by selling drugs. Willie and Terry have the harrowing task of proving Toby innocent.

A man disguised as a police officer kidnaps the daughter of a wealthy family, the Sloans. The Police Squad are quick to react to the kidnapping. The kidnapper writes a ransom note demanding two hundred thousand dollars, Meanwhile, Danko, Webster and Gillis notice that Ryker appears to be distracted. A fainting spell places him in the hospital, where he confides in Jill that the kidnapped girl may in fact be his biological daughter.

After three woman are murdered, the Police Squad takes action. In order to solve the mysterious murders and prevent future ones, the Squad welcomes two women officers to the force, Dawson and Conway. A plan is created which places Dawson and Conway in an apartment complex together, with Webster and Gillis across the hall.

In their off duty time, the rookies become involved in a camp for deviant, delinquent children and adolescents. Because of their involvement, the community's view regarding them, and the police force as a whole, is at risk.

A junkie addicted to dope sets his eye on swiping 82 million dollars worth of cocaine which has been confiscated. He will soon find that his plan is confronted with complications: the police have tagged the drugs for disposal in the ocean.

Webster is asked to play the role of a prisoner at the State Prison. He disguises himself as an inmate, in an effort to aid the issue of prison reform. However, when the other prisoners discover that Webster is merely pretending to be a fellow inmate, pandemonium results.

Jill, Danko's wife, is assigned to protect Lieutenant Ryker after he is wounded by a former prisoner who desires to take revenge. However, Ryker decides to take charge of the situation when Jill's life is at stake.

Lieutenant Ryker is selected to be personally in charge of an important investigation. A priest is murdered and a nun is badly beaten in a destitute neighborhood, and the community worries that religious restlessness with arise. As the investigation progresses, the rookies uncover a completely different motive.

A telethon featuring an extremely famous country western singer requests of the police department extra protection. The rookies are assigned to the event. Their placement on this assignment results in their protecting the singer from a couple of bitter and unforgiving country folk from Tennessee. The hillbillies hold the singer responsible for the death of their sister, who died while she was giving birth.