息子は母・あぐりが夜中に欲求不満に震える姿を覗き見てしまう。母を救いたい一心で、学校一のヤリチン友人に「母さんを抱いてくれ」と苦渋の依頼をする。息子の留守中、2人きりになったヤリチンはあぐりに急接近。年相応に肉づいた豊かな身体を若い男の超絶テクニックで容赦なく開発していく。息子の友達という強烈な背徳感に抗えず、長年飢えていた母の肉体は次第に快楽の奴●へと堕ちていき…。

The son secretly witnesses his mother, Aguri, trembling with frustration in the middle of the night. Desperate to save his mother, he makes a desperate plea to his school's biggest womanizer friend: "Please sleep with my mother." While the son is out, the womanizer friend gets close to Aguri when they are alone. He mercilessly develops her voluptuous body, which has matured appropriately for her age, with the young man's superb technique. Unable to resist the intense sense of transgression from being with her son's friend, the mother's body, which has been starved for so long, gradually descends into becoming a slave to pleasure…