When the incompetent Lieutenant Frank Drebin seeks the ruthless killer of his partner, he stumbles upon an attempt to assassinate Queen Elizabeth II.

Al Bundy is an unsuccessful middle aged shoe salesman with a miserable life and an equally dysfunctional family. He hates his job, his wife is lazy, his son is dysfunctional (especially with women), and his daughter is dim-witted and promiscuous.

Two young children and an adult in a small town have an encounter with an alien spaceship. 25 years later the children are reunited as adults in the same town which is now beset by strange cattle mutilations. Matters become worse when the cattle mutilations are joined by human murders and mutilations.

At night the Mangler stalks the streets of Los Angeles, killing and mutilating random victims. On the trail are a TV reporter, the father of one of the victims, and a police detective, but despite their efforts only the mysterious psychic DeRenzy knows what the killer is and how to stop it.