January 1566: En route to Edo, Master ninja Hiro Hattori and Portuguese Jesuit Father Mateo spend the night in a rural mountain village whose inhabitants live in terror of a legendary vengeful ghost. When the innkeeper's wife is murdered and Father Mateo's housekeeper, Ana, is blamed for a crime she did not commit, Hiro and Father Mateo are forced to investigate and reveal the truth. But when another woman turns up murdered in the snow, the detectives must face the shocking truth that the vengeful yurei the villagers fear might be more than just a legend after all.