Season 1

The day Kang Do Yun is sworn in as a prosecutor, his little sister is murdered. What he doesn't know is how her death ties into the complicated financial deal that threatens the nation's economy and his family's lives.

When the members of Golden Cross become aware of Do Yun's father's involvement to stop the financial deal, they force his hand by coercing him to admit to being his daughter's murderer.

Dealing with the aftermath of his sister's murder and his father's wrongful imprisonment, Do Yun sets out to find the ones responsible for Ha Yun's death.

The financial deal to sell Hanmin Bank hits its first major roadblock. Do Yun learns that his prosecutor appointment has been delayed and discovers the first clue to find out who is threatening his father.

Do Yun investigates his father's case further and uncovers why he was fired from the bank. Do Yun arranges to meet with his father.

Do Yun hunts those who are trying to silence his father after discovering a revealing photo of Ha Yun's killer. Shocked by the truth of this evidence, Yi Re searches for clues herself.

Yi Re questions her father's involvement in the murder case, and Do Yun dscovers the existence of Golden Cross.

After another mysterious death in another attempt to cover the baddies' tracks, Yi Re and Do Yun team up to re-investigate Ha Yun's murder case.

Do Yun uses Yi Re's relationship to her father to his advantage and Golden Cross hits a roadblock when their men are found out.

After more evidence points to Ha Yun's real killer, Yi Re questions Do Yun's true intentions and growing feelings for her.

Do Yun goes to Shinmyung to gather evidence of threat against his father and starts to be conflicted with his intentions to pursue Yi Re.

Do Yun gets employed at Hanmin Bank and works for Michael Jang to irritate Chief Seo and Golden Cross. Do Yun's allies warn him about working too closely with the enemy lest he fall for corruption.

Golden Cross tries to kill Do Yun which endangers Yi Re's life. Michael decides that he may not need Do Yun much longer.

Golden Cross catches on that Do Yun and Yi Re are working together to reveal the true murderer to the public and decide to stop the press conference at all costs.

When the press conference plan goes awry, Do Yun takes matters into his own hands to find out what happened to Yi Re and his mother.

Seo Dong Ha and Michael Jang are both in need of an investment when Moneta Fund appears. However, the man who's here to make the deal is someone they never expected.

Golden Cross is at unease with Terry Young at Moneta Fund and question his appearance. Furthermore, acquiring funds prove more difficult when a forty year long friendship starts to unravel.

Seo Dong Ha prepares for his congressional hearing to become the next economic minister. However, his opposition is quickly gathering evidence to reveal the truth to the world.

After exposing Seo Dong Ha's true nature to the public, Kang Do Yun realizes that there are repercussions to facing Seo and Golden Cross head on.

Kang Do Yun pulls out all the stops to bring the corrupt Golden Cross to light and his other enemies, though the attempt claims another casualty.