Thief Gaston Monescu and pickpocket Lily are partners in crime and love. Working for perfume company executive Mariette Colet, the two crooks decide to combine their criminal talents to rob their employer. Under the alias of Monsieur Laval, Gaston uses his position as Mariette's personal secretary to become closer to her. However, he takes things too far when he actually falls in love with Mariette, and has to choose between her and Lily.

Miriam Hopkinsas Lily
Kay Francisas Mariette
Herbert Marshallas Gaston
Charles Rugglesas Major
Edward Everett Hortonas Francois
C. Aubrey Smithas Giron
Robert Greigas Jacques
Luis Albernias Annoyed Opera Fan (uncredited)
Hooper Atchleyas Insurance Agent (uncredited)
Tyler Brookeas Commercial Singer (uncredited)