Mother Sayuri and her son Noriyuki are on a family trip together. Noriyuki was originally a shy boy, but there was one incident that caused him to become listless. It was when he witnessed a traffic accident involving his late husband a few years ago. It was a time when he still felt a sense of distance between him and Sayuri, his second wife. Since then, Noriyuki has been attending a psychiatric hospital. As part of his treatment, they decided to take Noriyuki to the resort at the factory where he works. However, on this trip, Sayuri...