A young couple moves to Tokyo, where they want to live and work. The young man is determined to become a film director. His girlfriend is less sure of what she wants to do and has the vague impression that she’s losing control of her life. Both of them get swallowed up by the teeming, disorienting city. The young woman, increasingly alone, becomes the object of a strange transformation.
A revolting creature spreads panic and death in the streets of Tokyo. The media calls it the “Creature of the Sewers.” The army finally manages to capture it. The monster is, in fact, a man from an unknown civilization who demands to be called Shit. His trial inflames passions.
It has been ten years now that he is hikikomori. He’s been living locked up in his apartment, limiting to a strict minimum all contact with the outside world. When a pizza delivery girl faints on his doorstep during an earthquake, the unthinkable happens: he falls in love. Shortly afterwards, he learns that the young woman has also become hikikomori. Well he dare cross the threshold separating his apartment from the rest of the world?