Atsuko is a 45-year-old housewife who married young and gave birth to her son shortly after. She now shares a comfortable, friendly relationship with her husband, able to talk openly about anything. However, she once crossed a line that no mother should, committing an unforgivable act that drastically altered her relationship with her son. Recently, her son has begun harboring new expectations toward her, leaving Atsuko to face the consequences and navigate the complicated path ahead.