Postwar Japan is at its lowest point when a new crisis emerges in the form of a giant monster, baptized in the horrific power of the atomic bomb.

Two soldiers are thrown together and make their way through German-occupied Dunkirk. After several agonising close calls they make it within sight of safety. A split second decision gives only one of them a chance at survival.

Suzuki Koichi, a 30-something hikikomori shut-in, allows his mother to dotingly tend to his needs. When she discovers that Koichi has killed himself, the shock is so great she loses consciousness and her memory of that day.