Being robbed of his wife, not paid back the money he lent and beaten nearly to death by the Matsunaga family, Kumataro, supported by his sworn young brother, Yagoro, decided to get square with them.
松永一家に女を盗られ、借金まで踏み倒されて半殺しにされた熊太郎は、舎弟の弥五郎に押されて仕返しを決める。