Ritzy McCarty is a fighter managed by his wife Joan, who wants him only to fight until they have the money to build a better life. However, he has other ideas.
Arthur Ferguson Jones (Edward G. Robinson) and Wilhelmina Clark (Jean Arthur) work at the same accounting firm. Jones turns out to look exactly like the notorious bank robber "Killer" Mannion (also Robinson) and is apprehended by the police.
After his true identity is confirmed, the district attorney gives Jones a letter identifying him, so that he can avoid the same trouble in...