Micheline Bertier is as wise as she is graceful, and is the perfect assistant to her boss, couturier Maurice Darnal. Darnal's business is faltering and he has to close down. Micheline's family is also in trouble. Her crazy-headed sister is about to steal her fiancé away from her. At the suggestion of singer Jacqueline François, Micheline goes on tour as an accompanist, and meets up with Darnal in Nice, full of projects he wants to involve her in. Micheline, who arrives in time to save her sister from a suicide attempt, will know how to run the new fashion house.