Kagenuma is cursed with the ability to read people’s minds and can even enter their dreams. The first movie already showed that this is nowhere near as cool a superpower to have as it sounds: most people do not think kindly of strangers, especially ones that look as much like a bum as Kagenuma does. So he spends his time locking himself in his tiny bare apartment, blocking out the hostile thoughts surrounding him. His only solace comes from playing with the neighborhood children who are nowhere near as judgmental as grown-ups are.

But things have grown worse of late: Kagenuma is plagued by terrible nightmares about his mother. She was so frightened of him and his abilities that she tried to kill him as a child, and ended up committing suicide herself.
Trouble is, Kagenuma can only fix other people’s dreams, not his own.
Wallowing in self-pity he is not the least bit interested when a schoolgirl asks him to help her with her recurring nightmare. But then people having that same nightmare start dying. And at the center of that mystery is one of the schoolgirl’s classmates, who is just as frightened as Kagenuma’s mother always used to be.

Intrigued, and only because he hopes to be able to better understand his own nightmares, Kagenuma once more becomes the Nightmare Detective and enters the schoolgirl’s