Antonin, Honoré and Papillote are sailors on the ship "L`Invincible". The three friends are in love with three pretty girls in Toulon: Honoré is in love with Mireille who, as for her, loves Antonin, and Papillote only has eyes for Angèle who, after a fifteen-month-long cruise,presents him a newborn baby that she claims is their son! A new woman appears: Patricia, as sexy as she is mysterious. Antonin, although disconcerted, falls under her spell.