「お前は恩を仇で返すのか？」ある日、夫・進が背任行為をしていた事が発覚。同僚として働く妻・すずも窮地に立たされてしまう。新婚生活は一瞬でどん底に…夫に代わり平謝りするすずに、社長の小沢はかねてから打診していた「秘書」の役職を改めて提示した。ただの秘書ではない、そう愛人契約だ。この条件を呑めば夫への訴えを取り下げ、解雇もしないという。夫のため、意を決したすずは熱く濃厚な社長との接吻契約を交わして…。

"Are you going to repay kindness with malice?" One day, it is discovered that her husband, Susumu, has been committing a breach of trust. His wife, Suzu, who works as a colleague, is also put in a difficult position. Their newlywed life is instantly shattered… As Suzu profusely apologizes on behalf of her husband, President Ozawa offers her the position of "secretary," which he had been offering her for some time. But it's not just any secretary position; it's a mistress contract. If she accepts these conditions, he will drop the lawsuit against her husband and will not fire her. For her husband's sake, Suzu makes a firm decision and enters into a passionate and intense kissing contract with the president…