An elderly commander takes his young lover, Milena, the daughter of an employee, to his beach mansion, leaving her in the care of the housekeeper, Letícia, who has sexual relations with the girl. On walks around the island, Milena meets a fisherman, Dimas, who will give her life a new direction. Over the weekend, the commander arrives with friends and throws a wild party; unsure of what to do, Milena accepts a ride in the red Mercedes of one of the guests and returns to the city.