While going on a family trip, Yuuji is in a car accident. He regains consciousness in a hospital bed, alone, his parents dead. Strangely, although the hospital is well-equipped, it seems like there are very few patients.

One day Yuuji meets another patient, Reiko, but she refuses to talk much. Then he overhears the doctor and nurse saying that Reiko is terminally ill, and needs an organ transplant...