Hitomi lost her husband in an accident and has been spending her days not being able to pay much attention to her son Takashi. She is shocked to hear at a parent-teacher conference that Takashi's grades are not good. Then, Takashi tells Hitomi, "I'll try my best if you let me suck your breasts," so she has no choice but to offer him her breasts. His demands escalate, and in the end they end up having sex...