Pregnant woman Hitomi, driven to an affair with a man she met online after discovering her husband's infidelity. Despite being close to delivery, she exposes her large belly and darkened nipples, surrendering her body greedily to the man's cock—an act far removed from the grace expected of a pregnant woman, instead expressing raw desire. During intense sex, even with her big belly in the way, the man thrusts deep into her uterus, engaging in such extreme acts that Hitomi herself grows concerned. All scenes are filmed by the man himself, which will later become a serious problem for Hitomi.