Saki (Reiko Shimura) is struggling with her son Keita, who refuses to go to school, and feels her heart breaking due to her husband's indifference. When Keita's homeroom teacher, Sekiguchi, visits their home to talk with him, the boy remains completely unresponsive. Overwhelmed, Saki can no longer hold back her tears and pours out her feelings of helplessness. Finding comfort in Sekiguchi's kindness, she seeks solace from her loneliness by sleeping with him. However, Keita, who had sneaked out of his room, accidentally witnesses the act. A heartbreaking story depicting family conflict and the complex bonds that tie them together.