Zhang is a middle-aged man who struggles in a hopeless insurance sales job. He is on the brink of divorce from his wife and has lost custody of his daughter. In addition, he also has to take care of his father who suffers from Alzheimer's disease. For economic reasons, Zhang Yimou was unknowingly invited to participate in an underground fighting game, but in the end, Zhang Yimou became obsessed with fighting and became a professional player.