A family of Brussels concierges, whose employers have left for the summer, decide to swap their home for a magnificent villa in the south of France for the holidays. However, upon arriving on the island, they discover that all the surrounding beaches are exclusively for naturists.

A women is absent-mindedly watching television. She caresses almost mechanically her stomach, her breasts, we sense her openess, she's pensive. The telephone rings. A low, sensuous man's voice speaks to her. He says he is her neighbour who lives opposite, he has been watching her for six months and he knows everything about her and her secret desires.