Lust, Caution stars Asian cinema icon Tony Leung as a powerful government figure who becomes enarmoured with Wang Jiazhi (stunning newcomer Tang Wei), the young friend of his beautiful wife (Joan Chen). But Wang is not whom she appears to be, and as their mutual attraction turns to dizzying passion, a perilous game of emotional roulette ensues, where devotion becomes indistinguishable from betrayal, and murder may become the ultimate act of love.