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

Horror novelist John and his girlfriend Shirley are taking a night drive, in search of an eerie graveyard that will hopefully inspire John to come up with his next story, but instead stumble into the wild rituals conducted by The Dark Master and his faithful servants.

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.