Knock Out (2020)

Zhou Si, a former boxer, faces a five-year prison sentence due to a tragic incident. Upon his release, he is devastated by the death of his wife, leaving him to care for their daughter, Zhou Zi, who is diagnosed with leukemia. To honor her dream and secure her future, he steps back into the boxing ring at 36. Despite enduring intense physical pain, injuries, and exhaustion, Zhou Si fights relentlessly, determined to achieve victory for his daughter, battling against the odds in a poignant struggle for hope and redemption.