A wanderer and his son arrive on an obscure northern island of Japan, causing the village of Pu to fall into disarray.

Professional killer Ken (Hirofumi Arai) is trying to break away from the yakuza. Taking up work at a local motorcycle shop, he forges a new life under the motherly eye of Yoko (Jun Fubuki), an older woman who owns the shop. However, Ken's dark past isn't letting him go that easily. Akira (Jun Murakami), Ken's ruthless mentor and himself an assassin, has been coming around and pressuring Ken to return to the family. Together with orphaned teenager Tsuyoshi (Niinobu Ryomei), Ken decides to take to the road and settle matters in the only way he knows - by the trigger of his gun. Featuring music by Snake on the Beach, a solo project of legendary singer and guitarist Yusuke Chiba, A Road Stained Crimson takes viewers down the high-octane expressway of bikes, guns and rock 'n' roll.