Cho In is a very gifted doctor who has everything that he wants whereas his older brother, Seon Woo, is jealous of all the attention that Cho In receives. Seon Woo blames his brother for taking everything good in his life away from him. Seon Woo blames Cho In for getting their father's love, getting more recognition as a doctor, and for stealing the woman he loves.

Based on a fictional book about a Robin Hood in Korea,Hong Gil Dong [1] (http://en.wikipedia.org/wiki/Hong_Gildong), this drama is very loosely based off of that book and the time it was set in.

Hong Gil Dong is the bastard son of a minister. He spends most of his time lazing the day away and taking goods from the various merchants. However, a local monk think he's destined to be more. Hong Gil Dong, for his part, really dislikes the injustices in this ranked world.

Heo Yi Nok has returned to Korea, fresh from China. She's an upbeat, naive and carefree girl. She's been living with her grandfather for the last few years. They both are merchants looking to make a fortune back in Korea.

Lee Chang Hwi, however, has been told since he was young that he's the rightful king of Korea. He bumps into Heo Yi Nok. This initially causes misunderstanding between them, but over time his heart is softening towards her.

Meanwhile Heo Yi Nok and Hong Gil Dong are developing a friendship that feels like (at least to Yi Nok) that it could be more.

As the question of rightful succession comes into play, Hong Gil Dong and Yi Nok are forced to take sides.

This drama is about a female lobbyist dealing with international arms traders. Kang Tae Hyuk is a successor of a main munitions business company in Korea. He is a young businessman with perfect appearance using a refined phraseology. He has an innate ability as a lobbyist and is a master schemer. He plans to sweep over the whole of Asia.

Lee Soo Hyun belongs to a special international narcotic drug crime investigation unit. He witnessed the murder of his mother at the hands of a gangster as a child. Suh Ji Woo is the first love from Soo Hyun's childhood with whom he was seperated from. Soo Hyun is adopted into Kang Min Ki's family and both grew up to become NIS agents. Ji Woo and Soo Hyun are accidentally reunited when the beautiful Ji Woo caught the attention of playboy Kang Min Ki. She and Soo Hyun are seperated once again because of Soo Hyun's vengence against his parent's enemies.

Han Do Kyung, specially scouted by the Incheon Airport Director, willingly accepted 1/3 of the pay she was receiving when working in Singapore to come back to Korea as the chief of operations of Incheon Airport. She speaks five different languages. However, Do Kyung lives with an uneven wound of her family and a regret of leaving her sister behind. She met Kim Ji Sung, a National Intelligence Service agent and gets entangle with him. Kim Ji Sung is very passionate about his work to the extend that he is willing to bend the rules to ensure the security of the country even if he is only acting on his instincts. After being stationed at the airport, he finds himself in an emotional turmoil with a woman he used to love who is also working in the airport. At the same time, he is falling for Han Do Kyung. Kang Ha Joon, a childhood friend of Han Do Kyung is also falling for Do Kyung. Kang Ha Joon is a quick tempered with a habit of talking aggresively due to his nature of work watching over thousands of surveilance cameras in the airport but has good relations with all the airport employees even the cleaners because of his kind personality outside of work. As his friendship develops with Do Kyung, he becomes a strong source of refuge for her. But as his feelings for her grows, his relationship gets more and more complicated with a woman who is his friend, superior at workplace and unrequited love.

The Homicide Investigation Team (H.I.T.) led by Cha Soo Kyung was established to investigate the case of a serial killer. The other four members were assigned from different precincts and when they first started, they all have their own ulterior motives and none of them was confortable with working as a team or trusted each other. Added to the mix, a rookie prosecutor Kim Jae Yoon was sent by the District Attorney's Office to keep an eye on the police's work. This drama depicts how cases were solved and how the members evolved into really working as a team.

Choi Kang (Eric Mun), a freeloader at home, has a hard time finding a job after being expelled from high school for fighting. He is admired by the gangs for his fighting ability, but his younger brother, working in the prestigious LK Corp., looks down on him. Then a little luck, and a bit of fortune lands him a meeting with the President and a job at the KSA (Korean Secret Agency)...and perhaps a girl or two are coming his way as well.