Mato isn't a normal city, but it pretends to be. Who could've imagined the evil hiding beneath the surface? Such difficult situations bring together unlikely people. Just like our protagonists young private detective Doe and the mysterious exorcist Gram. Utilizing their respective skills, they head out to unravel the mystery of Mato and defeat the evil force trying to bring about its downfall. Will justice prevail? Or will our heroes fall victim to corruption?