The amnesiac young man Yuan Bu is rescued by Wu Ting and Stone, siblings who run a flower shop. As Wu Ting's congenital terminal brain disease worsens, the three are overwhelmed by the costly medical expenses. To raise money for Wu Ting's treatment, Yuan Bu risks his life by getting into underground boxing. But as he gets famous in the boxing arena, he is discovered by the evil biologist Fu Yi who had previously used him as an "experimental subject," and it is revealed that Yuan Bu is a genetically-modified super warrior.