Han Ji-Hoon overcame an underprivileged childhood to pass the judicial examination and become an elite prosecutor. Kim In-Sook lives in the shadow of a Chaebol family, but finally becomes the head of a large corporation.

For Han Ji-Hoon (Ji Sung), Kim In-Sook (Yum Jung-Ah) is the woman who made his difficult life tolerable. Ji-Hoon grew up in an orphanage. He once became the prime suspect of a murder just because his teddy bear was found at the scene of the crime. During that time, Kim In-Sook sent the best lawyer to take up his defense. Ji-Hoon was cleared of the charges. Without Kim In-Sook, Ji-Hoon's life would have been destroyed. Instead, Ji-Hoon eventually became a star prosecutor after he caught the criminal who committed the murder in which Ji-Hoon was the first suspect.

Kim In-Sook has lived in the shadow of the powerful JK family for 18 years. She is the daughter-in-law of a chaebol family, but ignored by her in-laws. Making matters worse, her husband died in a helicopter accident. In-Sook's mother-in-law, Kong Soon-Ho, planned a conspiracy to make In-Sook appear incompetent and take custody over her son. The end result would have been Kim-In-Sook's expulsion from the JK family.

Ji-Hoon watched In-Sook at her husband's funeral. He was stunned to see In-Sook's beaten down appearance. Furthermore, Ji-Hoon learned of her mother-in-law's scheme to oust her from the family.

Ji-Hoon then set the goal to make In-Sook the head of the JK family. While he struggled to accomplish this goal, Ji-Hoon realized his feelings towards Kim In-Sook wasn't from a sense of pity or compassion. Rather, Ji-Hoon was in love with In-Sook. Finally, he accomplished his goal of having her become the president of the JK group.

But at that time, Ji-Hoon learns of a homicide involving a black male. As he digs up more information on the case, the cluse all point to one person - Kim In-Sook. As he gets closer to the truth, the more he doesn't want to know the truth ...