Rose Bonbon, a small singer of light variety with a naughty and colorful imagination, is in the glue with Roger, a characterful brute who thinks he is a manager. Between shabby hotels and cheap restaurants, she meets the handsome Dubel, an impresario on the sidelines. He hires Rose at the drop of a hat because he has to replace Hermine Zibeline for a tour in the Paris region with the famous Billie Boys from Broadway.