The owner of a bookshop in Paris suffers a personal crisis. In order to solve it he decides to convert his library into a sex-shop but the only effect is that he turns himself into a sexual obsessive man.
Cultural attache Jerome spends his last holidays as a bachelor at Lake Annecy where he meets Aurora, an Italian writer and old friend. She talks him into a flirt with his landlady's teenage daughter, Laura, but he falls for Laura's half-sister Claire and develops a desire to caress her knee.