When millionaire J.B. Ball (Edward Arnold) throws his wife's (Mary Nash) new fur coat out of his penthouse, it lands on office girl Mary Smith (Jean Arthur), who gets a whole new life she never could have imagined. Believed to be the tycoon's mistress, Mary begins getting free luxuries from various businesses. Things get complicated when she falls in love with a young man (Ray Milland) who, unknown to her, is Ball's son. Preston Sturges scripted this hilarious screwball romp.