Jigoku Gokurakumaru, the warrior of the seven swords, has a very juicy prize on his head. As he is getting rid of adversaries who want to collect the reward, he continues with his four assistants the search for the fabulous gold treasure that is hidden on the island of Zipang. But to achieve his goal, they must first find the fabulous golden sword that acts as a key. Jigoku Gokurakumaru will have the company of Teppo Yuri, a young woman who, at first, had set out to capture him.