人人都道金仁淑（廉晶雅 饰）飞上枝头变凤凰，嫁入豪门成为了大财阀二公子的妻子，开始了真正阔太太的生活。殊不知家中有婆婆孔顺浩（金英爱 饰）坐镇，金仁淑不知道吃了多少的苦头，受了多少的气。在婆婆的残暴“统治”下，金仁淑每一天都生活在痛苦和绝望之中。

　　丈夫的死让金仁淑在家中的地位一落千丈，前景不容乐观，就在此时，一直受到金仁淑照顾的检察官韩智勋（池城 饰）挺身而出，来到了金仁淑的身边，成为了她坚强的后盾。然而，随着时间的推移，韩智勋发现看似单纯善良的金仁淑其实是一个过去充满了秘密的女人，与此同时，金仁淑亦决定向婆婆宣战，夺回本该属于自己的金钱和地位。 ©豆瓣

財閥JK集團二兒媳金仁淑，她在這個家族裡沒有名字，被稱為「K」，18年來一直在婆婆孔順好嚴密監視和羞辱下，過著連呼吸聲都要隱藏的生活。持續15年受到仁淑關懷和支援的韓志勳檢察官，意外得知仁淑的現狀後，決心進入JK集團幫助她。

然而，當志勳在追查一宗黑人離奇被殺事件時，真相的箭頭指向的竟然是金仁淑，漸漸發現自己傾盡全部愛戀的人並非天使。此時仁淑決定向婆婆還擊，與眾人爭奪JK集團總裁的位置。

Two childhood friends grow up supporting each other through the difficulties of poverty, then meet again years later and stand by each other as they rise through the ranks of society. After marrying into a wealthy business family, Kim In Sook's life becomes a living hell. Seen by her in-laws as a gold-digging intruder, she is pushed to the margins. When her husband is killed in a helicopter accident, her mother-in-law takes away In Sook's beloved son. Enter Han Ji Hoon, an old friend of In Sook, and powerhouse new family lawyer determined to put a stop to In Sook's mistreatment. In Sook finally retaliates by launching a bold plan to take over the family company, and Ji Hoon supports her no matter the cost. In the midst of their battle for survival, their hearts are drawn together in a passion that could end up costing them everything.

모티프는 일본 소설이자 드라마로 방영된 '인간의 증명'으로, 김영현, 박상연 작가가 크리에이터를 맡았고, 권음미 작가가 집필했다. 염정아, 지성, 김영애, 차예련, 전노민, 전미선 주연으로 재벌 JK을 둘러싼 인물들의 관계를 다루고 있다. 메인 내용은 JK의 두번째 며느리이지만, 신분이 천하다는 이유로 18년 동안 인간 이하의 대접을 받던 김인숙이란 여인이 여러 우여곡절 끝에 JK기업의 모기업인 JK클럽 사장이 되는 과정과 그 과정에서 밝혀지는 그녀의 진실 등이다.