The lovable Munster family finds their placid world turned into turmoil by the diabolical Dr. Diablo, the mastermind of an art heist using monster robots, including clones of Herman and Grandpa.

Following their parents' divorce and their mother's subsequent suicide, a teenager and his younger brother are resentful of having to live with the father from whom they have long been estranged, and the struggle to reestablish a relationship is explored.

A bald, lollipop sucking police detective with a fiery righteous attitude battles crime in New York City.