ベッドだけが置かれた狭い空間に閉じ込められた男女は、借金を抱え返済能力が無いと認定された者たち。少子化対策の社会実験として、孕ませれば借金をチャラにできるというルールだ。中出し着床できればこの部屋から出ることができる。女はホスト金をつぎ込み多数の消費者金融に借金がある限界OLの玲衣ひとり。女ひとりしかいない空間で、必然的に彼女に中出しするしか、この部屋を出る術は残されていなかった―ここぞとばかりにレ●プするモラル無し男。実はヤリたいが女を守ろうとするチン騎士。罪悪感でなにも手を出せない気弱男。それぞれの絶望と葛藤や性欲が入り混じる集団中出し乱交！
Trapped in a small space containing only a bed are men and women who have been deemed unable to repay their debts. As a social experiment to combat the declining birthrate, the rule is that if they impregnate the woman, their debts will be wiped out. If they can get pregnant through unprotected intercourse, they can leave the room. The only woman is Rei, a desperate office worker who has spent all her money on host clubs and is in debt to numerous consumer finance companies. In a space with only one woman, the only way to leave the room is inevitably to impregnate her—a morally bankrupt man who s her at the first sign of opportunity. A cocky man who secretly wants to have sex but tries to protect the woman. A timid man who is too guilty to do anything. A group orgy of unprotected intercourse where each person's despair, conflict, and sexual desires intertwine!

– JavGG.net