Gaspard, a recent university graduate, arrives at the seaside in Bretagne for three weeks' vacation before starting a new job. He's hoping his sort-of girlfriend, the fickle Lena, will join him there; but as the days pass, he welcomes the interest of Margot, a student of ethnology working as a waitress for the summer. Things start to get complicated when the spoken-for Margot encourages Gaspard to have a summer romance with her friend, Solene, and he complies.