When the bumbling Lieutenant Frank Drebin investigates events following the shooting of his partner, he stumbles upon an attempt to assassinate Queen Elizabeth II.

Bumbling lieutenant Frank Drebin is out to foil the big boys in the energy industry, who intend to suppress technology that will put them out of business.

George Banks is an ordinary, middle-class man whose 22 year-old daughter Annie has decided to marry a man from an upper-class family, but George can't think of what life would be like without his daughter. His wife tries to make him happy for Annie, but when the wedding takes place at their home and a foreign wedding planner takes over the ceremony, he becomes slightly insane.

Frank Drebin is persuaded out of retirement to go undercover in a state prison. There he has to find out what top terrorist, Rocco, has planned for when he escapes. Adding to his problems, Frank's wife, Jane, is desperate for a baby.

Marginally a "straight" police drama in the Jack Webb/Quinn Martin school, Police Squad occurs in a strange universe where everything is taken literally (when a name "rings a bell" we here bells go off everytime someone mentions it), non sequiturs occur (a mime tries to spell out a ransom note, and Officer Nordberg guesses "Theme From a Summer Place") and sight gags abound (while looking for a corpse, someone wants to know the time and the dead man's hand drops out of a tree).

In this cult parody of cop dramas, replete with farce and sight gags, Lieutenant Frank Drebin and his fellow officers from Police Squad bungle their way though crime investigations.