Years after Young Hae's daughter, Ha Bin, was taken away from her by her mother-in-law, the young girl goes missing and is unofficially adopted by a new family.
Ha Bin, who is now known as Baek Won, lives happily with her new father and other adopted siblings. Meanwhile, Baek Won's real mother, who believes she is dead, vows to get revenge.
Baek Won and her siblings find themselves with a new older sister, but the young girl has a dark past. Han Joo vows to get justice from the people behind the boat trawls, no matter how dangerous it is.
Han Joo gets thrown in jail after collecting evidence against Golden Group for using the illegal boat trawls, and risks losing his family in the process of proving them guilty.
Young Hae, hoping she can return the favors Han Joo did for her when they were younger, helps Baek Won get her siblings back. Meanwhile, news of Golden Group's illegal activities hits the papers and damages the company's reputation.
Eok Jo tries to convince Han Joo to smuggle goods for Jin Ki, but instead, he accidentally reveals what really happened when Han Joo's children were taken to an orphanage while he was imprisoned.
Baek Won becomes a police officer in the Criminals Affair Division in order to avenge her father's unjust imprisonment. Seo Do Young has become a prosecutor and unexpectedly crosses paths with Baek Won.
Seo Do Young is torn between his loyalty to his father and his desire to help Baek Won catch the culprit responsible for the incarceration of her innocent father.
Baek Won finally tracks down Young Hae and intends to investigate her involvement in Han Joo's arrest years ago, but in the process, she finds out the truth behind why he went to jail.
Kang Jung Sim, has been experiencing some memory loss and her family, whether out of concern for her or her money, has begun to notice. Do Young and Baek Won work together to investiage illegally imported fish.
Young Hae admits she still has feelings for Han Joo, but Baek Won begs her to leave her father alone. The fight to take over Jung Sim's company, Golden Group, continues to wage between her family.
Upon the insistence of his father, Man Won is pressured to end his dealings with importing illegal fish. Baek Won feels uncomfortable working with Do Young after learning of his feelings for her.
Young Hae convinces Chun Won to pretend to be Ha Bin, Jung Sim's long lost granddaughter, in an attempt to gain control of Golden Group. As the plans takes shape, Young Hae realizes she may have created a monster.
Man Won admits he has feelings for Baek Won that go beyond his years of raising her and treating her like a sister. Do Young continues his investiation into Golden Group, despite being on suspension.
Han Joo winds up in the hospital after a car accident, and Jo Kwang Do returns from China to attempt to silence him about the kidnapping of Young Hae's daughter years ago.
Jung Sim decides to announce which of her family members are getting portions of her stock in Golden Group, and nobody is happy with the results. A disagreement between Ha Bin (Chun Won) and Young Hae causes a huge rift in their relationship.
The truth about the real Ha Bin and the falsified DNA test results are revealed to Jung Sim while the siblings of Golden Group fight for power over the company.
Baek Won and Do Young fool Seo Jin Ki into buying the mud flat overpriced. Seo Jin Ki fixates himself on the former president's hidden one trillion won.