A married woman named Riri sacrifices her job to support her husband and buy their dream home together. However, she discovers that her neighbor, who played a significant role in her past and was once both her ex-boyfriend and the mastermind behind his most heinous crime, has moved next door. As they cross paths around the neighborhood, he reminds her of their shared history, leading to a series of humiliating encounters. Despite wanting to move away immediately due to these uncomfortable memories resurfacing, Riri finds herself unable to resist when he propositions her with explicit sexual acts. Trapped between guilt and pleasure, she becomes his submissive plaything, submitting to his every demand while her husband remains oblivious just steps away.

結婚して真面目な夫を支えるため、妻のりりは仕事をやめ夫とともに夢のマイホームを購入。ご近所へあいさつ回りをしていると隣人がまさかの人生最大の汚点、犯罪に手を染めてしまった時の首謀者でもあり元カレでもある男だった‥。廊下ですれ違うと昔をネタにゆすられ、幸せの絶頂から悪夢の日々へ転落。今すぐ引っ越したいけど簡単に言えない住宅ローン。思い出したくない過去が蘇りながら抵抗もできず、なされるがままに男のいいなり性処理ペットと化す。夫がすぐそばにいるのに…不貞だとわかっているのに…相性抜群の絶倫元彼チ●ポに何度も何度もイッちゃう。次第に背徳アクメの中、快楽へ堕ちていく隣人ガチャ失敗NTR。