Zhang a middle aged man struggling with a dead end job as an insurance sales person, on the verge of divorce with his wife, losing custody of her daughter and on top of all this he had to take care of his father who's suffering Alzheimer's. Unknowingly Zhang was invited to join an underground fighting game for financial purposes but eventually Zhang becomes hooked on the fights and turns professional.
一名教師必須拋開他個人的創傷，團結他的學校，與一群暴力、被附身的學生為生存而戰。