伊莎贝尔(玛丽恩·瓦斯 Marine Vacth 饰)是一名17岁的妙龄女孩,拥有着靓丽容貌和美好肉体的她对“性”有着一番独特的见解。一次偶然中,伊莎贝尔遇见了一位游客,就这样,她寥寥草草地献出了自己的处女之身,之后,伊莎贝尔在探索“性”的道路上一路走远。 在网络上出售自己的性感照片、利用肉体换取金钱,在做着这些勾当的同时,伊莎贝尔依旧是同学和家人眼中的纯洁少女。一位老年嫖客的出现逐渐改变了伊莎贝尔,她不禁想要在年长的他的身上寻找亲情的依赖,不幸的是,在一次交易中,老年嫖客突发心脏病死亡,警察很快就找到了伊莎贝尔家,她所作的一切都在此时被公之于众。French teenager Isabelle is spending her summer holiday with her middle-class family in the south of France and decides to lose her virginity with German teenager Felix. Then she returns to Paris with her mother Sylvie, her stepfather Patrick and her younger brother Victor. Then Isabelle works as a call girl using the nickname Lea, meeting old men. She feels affection for her client Georges that is married with a daughter. When Georges dies from a heart attack while having sex with Isabelle in a hotel, she flees but the police investigate and identify her. The detectives in charge of the investigation disclose to Sylvie, who is devastated.