The walled city of Baldeum. In this city, those who experience mental distress due to certain causes may awaken as "Unlaw"—individuals who explosively manifest their emotions as supernatural powers. The protagonist, Norman, despite solving numerous bizarre cases in the city involving Unlaw, finds himself restrained in a dimly lit room. The interrogation revolves around the four Unlaw girls who aided Norman in solving the cases—referred to as "Tearflower," "Demon Dog," "Gemstone," and "Fairy"—and the details of the incidents themselves. This is a story of love and confessions, centered around four girls called "Monsters" and the boy tasked with managing them.