Julien and Agatha appear to be a great couple, loving, caring and seem to feel complete with each other. Though Julien often gives the impression of being interested in other girls, his lover doesn't care all that much and sometimes even looks like she's encouraging him to do that. It all changes when they meet an American woman who'll change their lives and their perception of love.
Set in a magnificent villa near a sun-drenched St. Tropez, lovers Jean-Paul and Marianne are spending a happy, lazy summer holiday. Their only concern is to gratify their mutual passion - until the day when Marianne invites her former lover and his beautiful teenage daughter to spend a few days with them. From the first moment, a certain uneasiness and tension begin to develop between the four, which soon escalates in a dangerous love-game.
