Mary, a high society girl, wants to see how the other half lives, so she becomes a cabaret dancer in a New York nightclub. The owner of the nightclub, Pop Hanson, and his criminal friends, Harry and Cassie, scheme to rip off a Montana millionaire. Finding herself interested in Harry, Mary goes along with their plan and decides to pose as his wife. The gang moves into Mary's aunt's deserted mansion as their base of operations.