Chick Larkin (Bud Abbott) and Mervyn Milgrim (Lou Costello) both work at the soda counter of a local radio station. Their true passion, however, is to become writers on a radio mystery show. They attend a broadcast of the radio program ''Murder at Midnight'' along with one of the writers, Jimmy Turner (Patric Knowles) and the producer, Jane Little (Louise Allbritton).