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비밀
赵敏赫（池城 饰）是个出身显赫的富家公子，迫于家庭压力，他与女友智熙分手，与国会议员之女申世妍（李多喜 饰）订下政治婚姻，自此他便过着花天酒地的混账日子。在城市的另一端，姜友静（黄静茵 饰）过着与赵敏赫截然不同的生活，她忙碌充实，拼命打工，与交往七年的男朋友安度勋（裴秀彬 饰）即将步入婚姻殿堂。 本该不会有交集的四人，却因为一起车祸，他们的命运紧紧连接在一起。安度勋在一个雨天里意外撞死了一个人，而这个人正是赵敏赫心爱的女友智熙。为了安度勋的前程，友静替其顶罪，锒铛入狱。另一方面，因失去了深爱的人，赵敏赫发誓要用尽一切手段，向友静复仇。四名男女的虐恋故事，就此展开。
Yoo Jung is imprisoned for a crime she didn't commit and she's got a prosecutor's fiancée who isn't helpful after running over an innocent woman.
Min Hyuk's girlfriend couldn't be saved, which leads him to insanity. Yoo Jung fights for her innocence against charges and learn more about Ji Hee.
Min Hyuk challenges Do Hoon to practice lawfully in his girlfriend's case, as he is challenged by his father to win Se Yeon's heart.
Yoo Jung faces problems as she delivers her baby in prison, making Do Hoon rethink what he's done to Yoo Jung's life, and Min Hyuk pays her a visit.
The freedom she deserves is finally back to Yoo Jung. Unfortunately, her release costs her more than she expects.
Jung Hwan's death still haunts Yoo Jung emotionally. Min Hyuk's father is hesitant about a deal Min Hyuk plans on signing with Se Yeon.
After Min Hyuk saves Yoo Jung's life, Se Yeon scolds him for being childish by pouring his anger on others. Do Hoon discovers a mysterious photo.
Yoo Jung is working for Min Hyuk to repay her debts. Do Hoon investigates the photo he found, and Min Hyuk faces a dismissal case he didn't expect.
As Min Hyuk is aware of Yoo Jung's relationships, Do Hoon begs her to stop paying the debts and stay away from the man who caused it all.
Min Hyuk ends it all with Se Yeon and further gives Yoo Jung struggles as his new housemaid. Yoo Jung finds something new about her dad and Min Hyuk.
Do Hoon meets up with Se Yeon late at night, while Min Hyuk admits his side of the story with Yoo Jung's father, leading them in different directions.
Do Hoon catches Yoo Jung with Min Hyuk in a steamy encounter. More things change as the tensions heat up between Yoo Jung, Min Hyuk, and Do Hoon.
Min Hyuk and Yoo Jung's kiss breaks Se Yeon's heart. Do Hoon is there for Se Yeon as Min Hyuk falls in love, leaving Yoo Jung confused.
Min Hyuk and Yoo Jung visit Ji Hee's remains. He promises never to leave Yoo Jung behind, as he falls deeper in love with her, which displeases many.
Do Hoon asserts that he is the only one who can protect Yoo Jung after confronting Min Hyuk. Se Yeon makes Do Hoon choose whether to live or crumble.
Proof of Jung Hwan's life emerges, which changes the direction of their fate as a family, and Min Hyuk asks about a secret Yoo Jung doesn't reveal.
