Yoko Kinoshita suddenly arrives in Tokyo from the countryside, disrupting her son Hiroyuki's daily life. The two once shared a deep bond and a forbidden relationship. Hiroyuki had moved to the city to sever that connection and maintain distance from his mother. But upon seeing her again after so long, uncontrollable emotions surge within him. Meanwhile, Yoko appears to accept the situation with mixed feelings, having resolved to finally part ways with her son.