連帯保証人となっていた友人が失踪し夫が多額の借金を負う事になった。保険の外交員として働く妻の花乃羽も返済の為、大口の契約を取り収入を増やさなければいけなかった。しかし、契約は思うように得られない。そんな時、たまたま訪問先で大企業の会長・小沢と出会う。小沢は花乃羽の美貌に目をつけ、欲望を満たす事ができれば好きなだけ契約すると提案した。夫の為に花乃羽は覚悟を決め小沢が好む艶やかで高級な下着を纏い、再び営業に出向く。それが後戻りのできない肉体契約になるとも思わず…。

A friend who had acted as a co-signer on a loan disappeared, leaving her husband with a huge debt. His wife, Hanaha, working as an insurance salesperson, needed to increase her income by securing large contracts to help repay the debt. However, contracts weren't coming in as easily as she'd hoped. Then, by chance, she met Ozawa, the chairman of a large corporation, during a visit. Ozawa, captivated by Hanaha's beauty, offered to sign as many contracts as she wanted if she could satisfy his desires. For her husband's sake, Hanaha resolved to go to Ozawa's liking, donning the glamorous, high-end lingerie he favored, and went out on sales calls again. Little did she know that it would turn into a physical contract from which there was no turning back…