During the tumultuous reign of King Injo (1623-1649) of Joseon-era Korea, Chil-woo witnesses the brutal murder of his family and village at the hands of the government.  As an adult, Chil-woo joins the Uigeumbu, a governmental body in charge of investigating injustices.  But when tragedy visits his life once again, he becomes an avenger, hunting down those who have wronged the innocent.

Cha Seung Hyo is an abandoned child who gets adopted in the United States and grows up to be a cold hearted person. Son Il Gun is a father who died, but he left things unfinished with his daughter. In order to make sure that his daughter is provided for he controls Seung Hyo's body for three hours a day for 49 days. He buys his daughter the things he couldn't do when he was alive with Seung Hyo's money. Il Gun's daughter, Young In, is a quick-tempered girl who meets Seung Hyo during her part-time job. At first she has a bad impression of him but she gradually starts to fall for the lonely Seung Hyo who is unable to open up to anyone else because of his bitter past.

Han-gyeol is a smart young man who hates to be tied down to one career in his life. Abhorring the idea of joining the family business, he is ordered by his grandmother to manage a cafe. Unable to disobey his grandmother, he reluctantly takes over the responsibility of running a cafe and begins to immerse himself in the gourmet coffee business. One day, he meets Eun-chan, whom he mistakes as a boy, and learns the meaning of true love...

A chubby high school student participatee in a sports competition to win a cash prize for sex change surgery.

A struggling musician takes a job teaching music to middle school children in a rural mining town.