Fan Chen is a young boy with a harmless appearance. His smile makes people feel soft, and he never hesitates when raising or lowering a knife. He is the youngest killer in the organization, so simple that he only believes in mission instructions and never asks why. Until that day, the leader of the organization, Jiang He, personally asked him by name - not because of his skills, but because of his face, which looked very much like Jiang He's dead lover.
Fan Chen became a stand-in. Wear the clothes worn by the other person, learn the tone of the other person's words, and even the arc of the smile has been corrected repeatedly. Jiang He possesses the evil power of "swallowing" and can steal other people's abilities for his own use. The entire power world is frightened. Fan Chen is trapped in a golden cage. On the surface, he is a favorite, but in fact, he is a substitute tool that can be discarded at any time.
By accident, Fan Chen activated the "Lottery System". Every time he completes a task or meets certain conditions, he can win a lottery. Prizes range from basic physical strength enhancements to rare superpowers, and even a one-time prop "Eye of Truth". He began to accumulate strength secretly, playing the role of a meek substitute while drawing money to become stronger. When Jiang He discovered that the substitute was no longer obedient, a game about identity, betrayal and counterattack officially began.