A man (Takamoto Tsukamoto) wakes up from a coma and suddenly finds himself in a dark maze-like room (basement). He has no clue about himself and loses all his memory. Is it a hallucination or a nightmare? However, the wound on the abdomen was clear and painful. He tried to move his body in a cramped space, looking carefully for an exit, during which he witnessed the hellish scene of dismemberment. Finally he met a woman with the same abdominal injury (Takeshi Fujii). They thought about the reasons for their imprisonment together, but they still had no clue, but they were getting closer to the truth. In any case, the woman must find an exit and leave this hellish place. They jumped out of the morgue pool, swam many miles, and finally returned to earth, but the truth made him deeply moved.