親の借金の肩代わりとして、アングラな奴●オークションに売られてしまった「れんか」と「ひめ」。手枷と首輪をつけられた二人は、狂った富裕層の慰みモノとして地下の館へと連れ込まれる。逃げ場のない密室で待っていたのは、男としての尊厳を粉々に打ち砕く徹底的な陵●と調教の日々だった。恐怖と媚薬に抗えず、やがて快楽に溺れていく二人。プライドをへし折られ、完全な「牝肉」へと堕ちていく絶望の物語。

To pay off their parents' debts, Renka and Hime are sold to an underground slave auction. Bound with handcuffs and collars, they are taken to an underground mansion to become playthings for a deranged wealthy family. In the inescapable confines of the room, they face days of brutal **** and conditioning that shatter their dignity as men. Unable to resist fear and aphrodisiacs, they eventually succumb to pleasure. A story of despair as their pride is broken and they descend into complete "female flesh."