元刑事のタクシードライバー、夜明（渡瀬恒彦）はある日、経営コンサルタントの美也子（田中美奈子）を乗せた。数日前、ある男性客から彼女の尾行を頼まれただけに彼女の乗車に驚く。夜明は彼女の希望通り越後湯沢に向かい、四日間の貸し切りを引き受けた。ところが翌日、刑事の東山（風見しんご）が現れ、美也子が東京で起こった殺人事件の容疑者になっているという。

Monjiro, reunited with his long lost sister, is pursued by a yakuza gang because he killed their boss. He also meets a fellow gambler who idolizes Monjiro. The gambler and Monjiro's sister are pulled into a conspiracy to get to Monjiro, but do things go as planned?

Kogarashi Monjiro is a lone samurai who agrees to take responsibility for a murder that his friend committed so that he can stay with his dying mother, with the expectation that his friend will confess and get him pardoned once she dies. Monjiro is sentenced to an island for prisoners. When he discovers that his friend's mother has died over a year ago, Monjiro seeks to escape with a group of prisoners in order to get his revenge.