In the late 1990s, in northeastern China, gangster Chen Shengli was sentenced to 10 years' imprisonment for cruelly cutting off the hamstring of his rival gang's boss, Jiao. 10 years later, Shengli is out of jail only to face a completely different society from that he knew. He is then determined to turn over a new leaf to get back to life with a kind heart. That's why he runs a kindergarten, But Jiao's hatred for him has never been defused, even a little bit. Jiao begins his revenge by plotting against and embittering this ex-convict who struggles for his new life. However, not only isn't Shengli brought down with his persistence and effort, but he also manages to start from scratch again and also falls in a passionate but regretful romance... The film shows how people from different specific groups choose their paths that leads to different ending. There;s only a thin between being good guys or doing bad things.