「さぁ、私の目の前でこのスーツに着替えなさい。」夫と同じ会社で経理として働く奈々。ある日、社長の小沢から夫の不正を知らされる。夫に代わり、頭を下げる奈々に対し、小沢から一つの提案があった。処分はしない…代わりに、秘書にならないかと。ただの秘書ではなく、愛人契約であることは奈々も気付いていた。夫のため…いや、自分のためだったのかもしれない。奈々は小沢の激しく、濃密な接吻契約を受け入れて…。

"Now, change into this suit in front of me." Nana works as an accountant at the same company as her husband. One day, she learns of her husband's misconduct from the company president, Ozawa. As Nana bows her head in apology on her husband's behalf, Ozawa makes a proposition. He won't punish him…instead, he asks if she would become his secretary. Nana realizes that this is not just a secretary position, but a contract to be his mistress. For her husband's sake…or perhaps for her own sake. Nana accepts Ozawa's passionate and intense kissing contract…