Chuno (The Slave Hunters) (2010), 24 episodes

Fans of Jang Hyuk will enjoy this intense action-packed historical period Korean drama series.

Lee Dae-gil (played by Jang Hyuk) is the son of a noble family, who fell in love with Kim Hye-Won (played by Lee Da-Hae), a slave. Her brother destroyed his master and everything he owned. He thought he had killed Lee Dae-gil. The brother destroyed the slave ownership papers and created a new life for himself and his sister.

Since Lee Dae-gil had lost his family's wealth, he became a slave hunter. Mainly, because he was searching for the woman he loved, assuming that she was still a slave on the run. He would capture slaves, collect the reward, and then help them escape again but this time to freedom. Lee Dae-gil is also hunting for Song Tae-Ha (played by Oh Ji-Ho). He has been labeled as a slave but he is a brave and noble warrior who will one day reclaim his honor.

To continue establishing his reputation and wealth, Hye-Won's brother arranges a marriage for her. On the day of the wedding, she runs away. She is about to be attacked by bandits but Tae-Ha rescues her. Their relationship grows into romance, all the while she believes her first love, Lee Dae-gil, has died. Eventually, Lee Dae-gil finds her but realizes that she in now in a loving relationship with the man, the slave, he has been hunting. From there …. (NO SPOILERS!)

Source: Historical K-Dramas That Slipped Under the Radar (Pt 1 of 5)