Niuniu, a wealthy middle aged woman living in Beijing, discovers that her husband is having an affair after coming upon a romantic e-mail. She knows only that it is one of her close friends but not which one. Determined to discover the truth, she invites her friends Qinqin, a ditsy actress, Lala, a successful artist, and Madam Ye, a property developer over to her lavish siheyuan home. There the four women share stories of their sexual past over food and mahjong. Niuniu, however, still has her plan to execute...

Director: Ning Ying