When Ogawa comes to visit his friend's house, he falls in love at first sight with his friend's beautiful mother, Shirone. She has such a seductive aura that it's hard to believe she's his mother... and her huge breasts are visible even through her clothes... Unable to forget her body, which is so attractive it makes his mouth water, Ogawa goes to secretly check on Shirone... There, Ogawa finds conclusive evidence of her affair, and in exchange for keeping her secret, he plays with Shirone's body as he pleases...