A peaceful village is being threatened by the Sujimon, bewitching monsters that can reduce men to lifeless husks. A woman named Gaaru sets out on a journey to find the Legendary Sujimon, a being that can supposedly combat this threat. As it turns out, the Legendary Sujimon is a yakuza named Tatsumi, who has been brought here from another world. Together, the pair will unravel the mysteries behind the Sujimon and bring an end to their reign of terror!