Lin Wu is forced to marry the dissolute Zhou Shanhai to make way for her stepsister Lin Qingqing's arranged marriage with Xie Yanshen. Unwilling to accept her fate, she plots revenge by seducing Xie Yanshen. At Lin Qingqing's Welcoming Banquet, while Lin Wu and Xie Yanshen are engaged in a sultry affair in the stairwell, Lin Qingqing senses something unusual about their relationship. The three of them become entangled in a fierce game of desire, ruining the arranged marriage and turning fate on its head.