Akemi, who lost her husband and lives alone, lives with her son and his wife, and their relationship is cold and sexless. Witnessing her daughter-in-law's actions that show no consideration for her son's desire for a child, Akemi fantasizes about her relationship with her son, wishing that she could give birth to a child in place of her daughter-in-law, and masturbates while fantasizing about her relationship with her son. However, her son witnesses her and she desperately refuses. However, that night, seeing her son's dejected face, Akemi prepares to entrust herself to him...