Survival game set in feudal Japan. Lost in Red Valley tells a story about a group of adventurers who chance upon a strange place within Japan wilderness. They quickly discover that the place was abandoned a long time ago after a conflict between two factions and the powerful curse traps anyone who dares to enter the Valley. They are now trapped forever in a beautiful prison till the day they die, surrounded by ancient ruins and bloodthirsty monsters waiting for a chance to pounce. The only chance to escape is to survive long enough to uncover the terrible secrets of the Red Valley and find a way to lift the curse.