 Shanghai first years of WWII. The zone is under Japanese occupation. Wang Jiazhi (Tang Wei) is a young actress at her first experiences. She is involved by a partisan group, trying to resist to foreign occupation, in a double game action. She has to get in confidence with Mr. Yee (Tony Leung) a collaborationist. To succeed in her dangerous mission Wang Jiazhi has to act. She has to act the role of a rich woman searching for emotional adventures. She starts a liaison with Mr. Yee without knowing where the border between fiction and reality is. This is the real danger.