Han Min-kook / Lee Sung-jae (mid-30s)
- CEO of Independent Financial Group (Investments & Securities Brokerage). A genius in investments.
He is a friend to money, but a foe to the law. Min-kook is like a beast that can never be tamed. He is also a rising star in the financial industry who even holds a fund under his name. Min-kook was at the center of the spotlight when he married a superstar actress six years ago, and he made millions while he was married to her. Although he invested in everything that was profitable, he failed to invest in his own wife. During the marriage, he was involved in several romantic scandals. His wife finally had enough and filed for divorce. The two had a seemingly simple consensual divorce. But before Min-kook had time to catch his breath, he received some unpleasant news. His ex-wife is now asking him to divide their assets through her lawyer and is demanding $100 million dollars. Was getting married such a risky investment in life? He just can’t seem to understand the answer to that question.

Woo Lee-kyung / Lee Soo-kyung (29 years old)
- A lawyer new to the legal world.
During the six months of her career as a lawyer, she has only had three cases entrusted to her.
Unlike most lawyers, her heart moves faster than her head, and she can never turn a blind eye when she witnesses injustice. After finishing high school, she was hired as a secretary in a large law firm called “Daebo.” There, she fell in love with a new star lawyer and ended up moving in with him.
One day, he coldly leaves her, and she digs into his law school books that he left behind. After a while, she passes the bar exam and finally becomes a private lawyer in her own tiny office. She hardly has any clients, and all the cases she handles are divorce-related. One summer night, when the entire nation is going wild watching the Olympics, Han Min-kook opens the shabbiest legal office in town.

Lee Ae-ri / Han Eun-jung (29 years old)
- A beautiful actress who left the entertainment industry upon marriage when her career was at its peak.
Ae-ri is Han Min-kook’s wife and high school buddy of Woo Lee-kyung. She is also the fashion icon of the century. Even a grocery bag becomes the “it bag” when she carries it around. Six years ago, when she was passionately proposed to by a young man, she left her career without any regrets. She was indeed in love with Min-kook, but to her, marriage was the safest investment she could ever make in her life. But her marriage turned out to be a very lonely one. After six years, she ended it all and filed a huge lawsuit. The amount was $100 million dollars, a figure that was unheard of in the history of Korean divorce courts! Thanks to the prenuptial agreement that Min-kook signed and quickly forgot about, she now has a 100% chance of winning this case. At first, she thought of filing for $50 million, but thanks to her competent lawyer Byun-hyuk, she changed her mind and raised the figure all the way up to $100 million dollars. Thanks to her hotshot lawyer, she can finally retrieve her wings to soar again. Will she be able to fly and land in her new dream life through this lawsuit?

Byun-hyuk / Ryu Soo-young (34 years old)
- Byun-hyuk was a famous divorce court lawyer in the US and was scouted to the large law firm “Daebo” in Korea.
He is the ex-boyfriend of Woo Lee-kyung who he coldly left six years ago. He is a smoothtalker, and loves to joke around unlike most of the other lawyers. Thanks to his smoothtalking, he can easily lure ladies and judges. He is also slick in luring his clients. When the secretary he dumped six years ago returns to his life as a slightly lacking but passionate lawyer, he finds her attractive all over again and does everything to lure her back. But things do not seem as easy as they were six years ago. He knows how to draw the line between his private life and business, so when he learns that Lee-kyung is representing Min-kook, he laughs to himself thinking that this is going to be an easy, slam dunk case. Meanwhile, when Lee Ae-ri begins to lean more and more on Byun-hyuk, he is suddenly tempted to break his own rule of never dating clients.