Soap shop owner Sasaki's side business involves acquiring, selling, renting, training, disciplining, and buying sexual slaves. One day, he was asked by wealthy Daimyo Miyazaki to procure a new slave girl. Determined to make ends meet after losing his parents in an accident and supporting his hardworking sister through college, Sasaki kidnapped and imprisoned OL Mei, intending to train her as a high-quality sex slave...

ソープ店オーナー鮫島の裏稼業は、性奴●の調達、販売・レンタル、仕込み、躾直し、買取等。ある日のこと、資産家の大宮司から新たな性奴●の調達を依頼された鮫島は、両親を事故で亡くし妹の学費を稼ぐため懸命に働くOL・芽依を拉致監禁して…