The Stooges are janitors who have just finished moving furniture and assorted items into the office of a detective. Shemp fantasizes about the exciting life of a private eye, when a beautiful blonde in distress (Christine McIntyre) rushes in begging for help, claiming she is being followed. While the Stooges search the hallways, she quickly scribbles a note and is captured by a mysterious figure.
The Stooges follow her note to a dark house on Mortuary Road where an evil scientist (Philip Van Zandt) is building an army of robot men. Fanning out to search, Shemp finds the girl tied up and gagged in a curtained alcove at the end of the main hallway. The scientist and his assistant (Stanley Price) then try to dispose of the Stooges, but the Stooges overcome the odds and escape with the girl in a car driven by one of the scientist's robots.