Yoko had won a literary award as a writer but has been unable to write new stories for a long time. She gets a job at "Crescent Garden," a nursing home for people with severe disabilities, where she meets Sato, her young co-worker, and Ki-chan, a resident of the same age as Yoko. Ki-chan is blind, bedridden, and rarely moves. It was during this time that Yoko becomes pregnant. Yoko recalls the loss of her son and wonders if she should undergo prenatal diagnosis.
Meanwhile, at "Crescent Garden,” Sato’s eccentric thoughts are fostered and accelerated by his co-workers who treat the residents as if they have no personalities. He asks, "Can you talk? Do you have a soul?” And this eventually leads to a shocking incident where more than dozen residents were killed…