Mao Yuqiang notices that his classmate Kong Ling has suddenly become rich. Curious, he steals Kong Ling's QQ account and finds the website “Sincere Wishes Exchange.” After midnight, the site transforms into “Netherworld Exchange,” where wishes can be traded for one's remaining lifespan. Mao Yuqiang first enters “Trade for Xue Yufei,” but gets her name wrong, bringing Xue Yufei closer to Manager Huang. He then enters “Manager Huang falls to his death,” and Manager Huang dies horribly just as predicted. Mao Yuqiang also discovers that he has cancer. Desperate, he tries to trade for Kong Ling's life, but dies in a car accident while receiving his “inheritance.” In the end, it is revealed that Kong Ling had long been manipulating Mao Yuqiang to extend his own life, while Xue Yufei is actually a skeletal “life exchanger.” They have both become her offerings of remaining lifespan.
