Ichi meets a young boy, and subsequently saves his drunken father from a beating by yakuza thugs. The father’s debts may force the boy’s sister into prostitution. Ichi attempts to pay back the debt through gambling, but the father makes a deal that puts Ichi and the boy into jeopardy. Meanwhile, Ichi ends up dueling a very skilled ronin swordsman who is trying to raise money for medical treatment of his blind sister.