After quitting his job and returning home to his hometown, Satoshi found himself aimlessly wandering around without any real purpose. He often spent his days lounging at his friend's house, where he unexpectedly reunited with his childhood crush Yumi - the mother of one of his friends. Unable to contain his long-standing desires for her, Satoshi pounced on Yumi, pushing aside all thoughts of propriety or respect. His thick, muscular cock relentlessly pounded away at her, leaving her breathless and begging for more. As their passionate encounter unfolded, something strange began to happen; Yumi's body seemed to transform from that of a resistant mother figure into a submissive female eager to please him.

仕事を辞めて、地元に帰省してきた学。だが大した目的もなく日々フラフラとしながら友人の家に入り浸っていた。そこで昔から憧れてた友達の母・由美と再会して…。昔から由美に片思いしていた学は持て余す性欲を抑えきれず、「どうせなら俺色の女に…」と彼女を押し倒すのだった。激しく突きあげる彼の逞しい肉棒に数えきれないほどイカされ、母ではなく女であることを思い知らされた由美の肉体は、徐々に従順なメスへと変わって…。