We meet our protagonist, the hulking mountain man Sensaku (played by legend of Japanese wrestling, Keiji Muto), as he reaches Tokyo from his home in Hokkaido, intent on finding his vanished fiancée who came to the city to study. Here he roams the junkyards and dive bars, finding himself stumbling into a subterranean world of modern-day gladiatorial combat that he must explore if he is to ever find his love. In amongst battling people to the death, he meets an opera singer no longer able to sing (Michiru Akiyoshi) and the two begin to roam the city together.