In a world where dreams reveal innermost desires and memories, a tech lab pioneers the 'DC Mini,' a device to explore others' minds. Atsuko Chiba and Kosaku Tokita aim to use it for therapeutic purposes. Yet, the risk of misuse looms large, as the stolen technology could induce psychological turmoil. With the aid of Officer Konakawa, who's part of their experiment, they embark on a dual-realm hunt to thwart the mental terrorist lurking in dreams and reality.