Can corporate politics turn a bad person into a good person? Kim Sung Ryong is a skilled accountant who works for gangsters. He makes his way into a company called TQ Group as a middle manager in the accounting department with the intention of embezzling money from the company. As he contends with hot-shot accountant Yoon Ha Kyung, financial prodigy Seo Yul and peppy intern Hong Ga Eun, Sung Ryong finds himself embroiled in office politics and notices other shenanigans by those in power that threaten to bring down the company. Sung Ryong slowly comes to realize that he’d rather fight against corporate corruption and fight for employees’ rights than complete the mission he originally came to do. Can he succeed at his new objective against all odds?

Yoon Hyun Woo is a devoted, hard-working, and loyal secretary to the Soonyang chaebol family, which runs the lucrative Soonyang Group business empire, founded by Jin Yang Cheol. During a power struggle between Jin Yang Cheol's children for control of the empire, Hyun Woo is ruthlessly betrayed and killed under the orders of an unknown member of the chaebol family. Miraculously he wakes up as a kid inside the body of the youngest member of the family – Jin Do Jun.

After he realizes what has happened, Yoon Hyun Wo plots to use his new “identity” to formulate a hostile takeover of the group – and punish the people who killed him. But, will the cold-blooded and money-hungry CEO of Soonyang Group, one who firmly believes in right of primogeniture, be so easy to win over or conquer? Will Hyun Woo be able to wrest the reins from Jin Yang Cheol's children? And what role will be played in all this by a dogged public prosecutor named Seo Min Young, nicknamed “Soonyang Group Grim Reaper”?

Unconventional banker Hanzawa Naoki has been successful in exposing numerous irregularities at his bank, the Tokyo Chuo Banking Corporation. As a result, he is seconded to Tokyo Central Securities (TCS) to head their Corporate Development Department. Soon after, the TCS is involved in a hostile takeover by a large IT company. With the share purchase price expected to surpass 100 billion yen, it is a deal worth an unprecedented amount to TCS. Unbeknownst to Hanzawa, the bid will incite a competition war with a new bank. Will he be able to overcome the problems plaguing the TCS and inflict twice the pain on those making unreasonable demands?

An idealistic banker takes on corruption and wrongdoing at his large corporate bank. While forging ties with some unlikely allies, he must use his financial expertise, his instincts about human nature, and his skills of improvisation to try to stay one step ahead of his powerful enemies.

Shibusawa Eiichi was born in 1840 to a farmer’s family. He grew up helping his family with work, which was to manufacture and sell indigo production and also silk farming. He left his hometown at the age of 23 and began working for the government. He later traveled to Paris and learned about banking. Upon his return to Japan, he helped build up the first modern bank in Japan. He eventually became a founder or supporter to about 500 companies and was involved with about 600 public services, including education for women.

During turbulent economic times in Japan, Masahiko Washizu leads a foreign investment fund and is criticized for being a vulture. He tries to buy a bank and another company that are experiencing financial depression.

Ting Hai accidentally killed his long-time friend Fong Tsun Sun and left Sun's four children to Sun's fiancee Law Wai Ling. Fong Chin Pok, the eldest son of Sun, vowed revenge for his father.

Years later, Ting Hao Hai and Ting Lei Hai managed to grow powerful in triads. Stifled by feuds, the three sisters, Fong Fong, Fong Ting and Fong Man, were forced to pay the high price in the battle. Meanwhile, Hai became wealthier and wealthier. He was busy grabbing money in the stock market. On the other hand, Pok, by working with veteran drug dealer Chow Chai Sun and retired inspector Lung Bon, his intimate Yuen Mui, Bon's daughter Lung Kei Man and Ting's best friend Chan To To, intended to turn the arena into the killing field...

About two people with their own painful stories who go through a complicated process of hurting and healing while falling in love with each other.

No Hwi Oh is a detective in the violent crimes division of the Gangnam Police Station. He thinks that he is doing well until his life suddenly takes a turn and he becomes a “crazy” person who can’t hold in his anger about anything.

Lee Min Kyung is a woman who is caught up in her own delusions and compulsions. She had lived an ordinary life as a pretty woman with a respectable job until “that incident” that caused everything in her life to break down. As a result, she was unable to trust anyone and is caught in a prison of her own making. Her delusions also have the unfortunate side effect of making everyone else around her angry.

-Genius Male Lead
-Bad Boy Male Lead
-Second Chance Romance
-Revenge
-Orphan ML
-ML spends time in prison after he gets revenge
-SML betrays ML due to jealousy