On his way to be married, bandleader Kay Kyser learns from a newspaper article that he has been recalled to Army service. After a hasty wedding he reports to camp only to find that a mistake has been made; what the Army really wants him to do is find out about an espionage ring that is operating out of the Orchid Room, the nightclub where Kyser's big band plays. The unlikely spy's mysterious contact is future Academy Award winner Jane Wyman, and together they help keep the homefront safe for Democracy while Kay tries to keep his neglected bride from bolting.