A tiny mountain province is in big trouble. The young prince Manase, immersed in exquisite entertainment, removed himself from the burdens of rule, shifting them to a corrupt and stupid judge. The forests and roads are completely ruled by robbers from the gang of the cruel Kuemon. The inhabitants of the villages whisper to each other rumors about a terrible demon horseman wandering around the surrounding area. And at the crossroads of three roads, the bodies of people killed by an arrow in the back are found again and again. Who is behind these crimes? What is the mysterious killer trying to achieve? Prince Manase and the judge are ready to execute the first person who comes to hand. And only one person is interested in finding the real one criminal and punish him - the wandering ronin and unsurpassed sword master Matsuyama Kaze.