Alex (Vincent Perez Vincent Perez) is about to get married. In his view, going to bed means the end of love. This is all because of the shadow caused by seeing his mother constantly changing sexual partners when he was a child. When he saw the moving Fang Fang (Sophie Marceau Sophie Marceau), his heart lit up the flame of true love. Alex decided that he wanted to pursue Fangfang, but not to involve lust. Fangfang also fell in love with Alex, but Alex was completely in love with her, which made Fangfang very distressed. In order to get close to Fangfang, Alex lived next to her room and installed one-sided glass to observe Fangfang's daily life. Watching her put on her dance costume, lift the dance steps, and make all kinds of ghostly expressions, but she didn't have the courage to break the boundary between them. This glass became a wall of Alex's heart. How long do we have to wait before a lover can get married? Fangfang finally discovered the secret of Alex, but can Alex dispel the knot?