On his fiftieth birthday, Serge Charan, a large industrialist overloaded with activities, decides to leave everything to go on an adventure. In a train heading for the Côte d'Azur, he meets six young girls returning to their boarding school. Arrived at their destination, Serge Charan rents, under an assumed name, a villa with a view of the garden of the boarding school. His presence arouses questions and the interest of young girls who are sensitive to his charm. But one of them, Simone, falls completely in love and runs away from boarding school.

Surmene, l'industriel Charan décide de partir seul en vacances. Dans le train, il rencontre Simone, des rapports amicaux s’établissent mais bientôt ils tombent amoureux l'un de l'autre. Charan rentre a Paris et Simone le suit. Madame Charan et le secretaire Arsène arrangent tout et Simone rencontre un brave garçon de son âge...