Shen Ling, a cruel and ruthless man, has no parents, brothers, or partners, and he is also the emperor of the dark world. His daily job is to wander in the world of desire, violence, fame and fortune, using cruel means to destroy other people's lives, which is inhumane. But suddenly one day, an ordinary man came to him and told him that he was his brother, and Shen Ling was his brother who was lost in the fire when he was seven years old. Under dubious belief, Shen Ling and this man began a "brotherly relationship" that transcended ethical and moral taboos. However, as your heart slowly sinks, the truth emerges, and a cruel story truly begins.