The realm of dreams can serve as a remarkable window into the psyche, revealing one's deepest desires, aspirations, and repressed memories. A hopeful tech lab has been developing the "DC Mini," a device capable of delving into the dreams of others. Atsuko Chiba and Kosaku Tokita have worked tirelessly to create this technology, hoping to use it to deeply explore patients' minds and help cure them of their psychological disorders. However, accessing the deepest corners of a person's mind carries tremendous responsibility. In the wrong hands, the DC Mini could be used as a form of psychological terrorism, causing mental breakdowns in its targets. When the technology is stolen and people around them begin acting strangely, Atsuko and Kosaku realize they face a serious problem. Enlisting the help of Officer Konakawa, who has been receiving this experimental therapy, they search both the real and dream worlds for their mental terrorist.