Genius boxer Chen Chuang was banned for life for a disciplinary violation in his youth, and spent ten years living in destitution by delivering water. Saving someone one day, he rescued the boy Jiang Ran and reunited with his ex-girlfriend Jiang Wan. Relying on family seafood allergy characteristics and age calculation, Chen Chuang learned that Jiang Ran was his son who had been separated from him for ten years. Jiang Wan, now a corporate executive, had been deeply hurt by Chen Chuang and was unwilling to let her son contact the down-and-out man. However, Jiang Ran adored Chen Chuang and insisted on becoming his boxing apprentice. Wanting to make up for his shortcomings, Chen Chuang worked hard to win the chance to accompany his child. Jiang Wan's cousin Lu Yuan set up a boxing match as a test, and a severely injured Chen Chuang fought desperately to defeat his old adversary. In the end, Jiang Wan let go of her knot in her heart, the family resolved their barriers, and Chen Chuang ushered in family affection and redemption.