Tragically separated during childhood, the three reunite as adults and set out to avenge their parents' deaths, their fates playing out against a larger tide of power, money, politics, and the growth of a city.

One day, Kang-mo overheard that a group of dock workers wanted to entitle his father to rob the gold bars he transports.

Eventually, Kang-mo is forced to work as a shoeshine boy to make end meet and encountered Tae-seob by chance.

Kang-mo works as assistant to Tae-seob and Sung-mo becomes the right-hand man for Pil-yeon while Mi-joo becomes a caretaker for the wife of Chairman Hong, one of the prominent building contractors in Seoul.

Sung-mo secretly helps Hong for his own plan of revenge causes him to finally reunite with his siblings to which he apologizes to them for failing to protect them.

After being released, Kang-mo establishes the Han River Construction company to compete with Manbo Corporation which Pil-yeon and Tae-seob control.

Eventually, Kang-mo succeed in making Manbo Corporation to lose a major contract in land development in Gangnam and manages to isolate Tae-seob allies in the construction association.

Out of guilt, Tae-seob decides to atone for his crime and transfers half of Manbo Corporation assets to Kang-mo as a token of redemption.

Many years later, a now-insane Jo Pil-yeon breaks out of prison to try to murder Kang-mo, but he fails and commits suicide afterwards.