An heiress discovers during her engagement that the man she is about to marry is a fortune-hunting fraud. She runs off, and during a street scuffle, she gets a blow to her head which leaves her with amnesia. She is taken in by Flatiron Stubbs (Wally Patch) and Mario Moroni (Julian Vedey), a pair of street vendors. The fraudulent Count turns up while searching for her, and convinces her to go to Paris with him. However, Flatiron and Mario follow and rescue her from the Count.