Dreamy Ria, a young wife married to her older boss Mako, fell head over heels for him due to their resemblance to her deceased brother. They lead a happy life together until fate throws them a curveball - they decide to have children and move into a larger apartment. Little did they know that their new home was located next door to a notorious yakuza office building. When the yakuza starts making advances towards Ria, she reluctantly agrees to satisfy his desires in order to protect her family. As their relationship deepens, both are drawn into a world of lust, betrayal, and danger beyond anything they could have imagined...

若妻のりあは、親戚筋から紹介された上場企業の課長であるまことと結婚をした。まことは一回りも年上の男性であったが、亡くした兄に似ているコトもあり一目惚れ。今では慎ましくも幸せな暮らしを送っている。そんなある日、不条理は突然訪れる。子供が出来ることを考え、少しずつ貯金したお金をはたき、少し広めのマンションに引っ越すが、そこは隣にヤクザが事務所を構える地獄のようなマンションだった。そのヤクザがイチャモンをつけて来た事がきっかけで、二人は地獄の底へと堕とされていくことに……。