There seems to be something wrong with that champion. He died suddenly in the match with Takizawa. In order to keep her husband's brave and invincible glorious image in front of her son, her wife put a lead block in Takizawa's boxing gloves to frame him. The boxer (I remember Guan 8) wanted revenge, but the boxer's son Hong Tai thought it was innocent and stabbed his father's people in the conflict. In order to protect Hongtai, Takizawa said that he stabbed the man and started his escape career under the cover of KUT.
Later, the stabbed person saw that Longze would rather suffer than protect Hongtai, and felt that Longze was not a bad person. Finally, the boxer's wife was finally moved and told the truth. Takizawa was finally cleared of suspicion. The general plot is like this.