After her husband, Isao, completed his career as a high school teacher and they moved to the countryside, several years had passed. However, Isao passed away due to illness. Overwhelmed by grief, Yuko Kuremachi finds a brief respite when former students from the track team he once advised visit from Tokyo to pay their respects. Now grown men, their reunion brings her temporary comfort. That night, when she allows the former students to stay at her home, she suddenly becomes aware of a certain reality. This decision would soon prove to be a major mistake.