This play is adapted from the novel of the same name by Japanese writer Kazuo Ishiguro. It is a science fiction suspense film. The three protagonists in the story study in the same school, which is established in the isolated mountains. One day, a new teacher came to the school. This teacher was deeply attracted by the school's teaching philosophy from the very beginning, but came to the school. After reading the book, the teacher was surprised to find that there was a mysterious and weird atmosphere in the school, which made her feel very scared. Later, she gradually learned the true fate of each child, and she suffered a lot after learning the truth. Mental pressure, she later told the children the secret when the children were about to graduate. Later, the principal also told them the special mission of the children. It turns out that the students here will use their organs to help those in need in the future. After learning the truth, the three protagonists feel extremely fear and despair. In the past, these three protagonists also grew up and entered the society, and their missions became closer and closer, and the three fell into darkness....