A young couple's car breaks down so they enter the houe of Dr Frankenstein who want to transfer his brain into the monster and Dracula wants the girl for himself. The film is based on the 1967 stage musical I'm Sorry the Bridge is Out, You'll Have to Spend the Night and the novelty son Monster Mash by Bobby Pickett. The film has a weak plot and dialogue, but is still enteratining for a low budget musical comedy.