Nemuri Kyoshiro, a youthful and cynical ronin with unparalleled talent, is approached by each side in a sport of corruption, ambition, and double crosses. The chief of the Kaga clan, who thinks he has killed his smuggling associate, fears that the shogunate will uncover his unlawful actions. He learns of proof that may show his guilt. In the meantime, his associate shouldn't be lifeless, and, assisted by a grasp of Shorenji boxing, is on the lookout for revenge and for his loot. The Kaga chief sends the attractive Chisa to enlist Nemuri's help. The surprising occurs: the hard-bitten Nemuri falls in love. Can he defend her, topple the criminals, and keep away from the boxer's lethal talent?
