Patrice's good looks have made him a consummate womanizer but they also helped him win the heart of Juliette, the daughter of Blanche Eroli, an influential Parisian clothes designer. The latter doesn't want him as a husband for Juliette and would prefer to see her married to Vincent, her right hand man. To this end she offers Patrice a juicy check if he agrees to leave Juliette. He accepts the deal and leaves for the Riviera, where he discovers love in the person of pretty Caroline. But Juliette, who does not love Vincent, traces Patrice as far as Nice. Soon afterwards her dead body is found lying on her former fiancé's bed...

Blanche, directrice d'une maison de couture, donne un chèque à Patrice afin qu'il renonce à épouser sa fille Juliette, qu'elle jette dans les bras de Vincent. Parti sur la Côte d'Azur, Patrice rencontre la fille d'un important producteur de parfums, Caroline, avec laquelle il fait des projets pour leur avenir commun. Leur situation devient plus délicate lorsque Juliette et Vincent le retrouvent par hasard lors d'un déplacement dans la région.