Set in a tumultuous period where the political scene is murky and various people fought to gain power and the throne, the young king will do anything to strengthen his shaky position in court. His childhood friend Baek Rok leads a secret military force loyal to the king, called the "Black Cloud Swords." Baek Rok lives for his king, his brother Baek Kyul and his lover Jung Yeon, but when his ambitious brother betrays him and leads him into a trap, he finds himself on the run. He becomes a slave and gladiator, eventually returning to Joseon to seek revenge.

Hyeon was killed in the battle field and his corpse was bitten by bats, thus turning him into a vampire. His only salvation was to draw the blood of 9 virgins at full moon. Yeon was framed by her husband Jae Seong's mistress and was being accused of having an affair. While looking for his prey, Hyeon came across Yeon and saved her from being killed by her in-laws. The two fell in love which was destined to end in tragedy right from the start.

Jang Joon Ha is a man out for vengeance. In one day, Joon Ha lost the two most important people in his life. His brother, Young Ha, was wrongly convicted of a crime that he did not commit. The woman that he loved was murdered and his brother was the prime suspect. Joon Ha, an attorney, sets out to prove that someone else committed the crime.

Jang Joon Ha is a man out for vengeance. In one day, Joon Ha lost the two most important people in his life. His brother, Young Ha, was wrongly convicted of a crime that he did not commit. The woman that he loved was murdered and his brother was the prime suspect. Joon Ha, an attorney, sets out to prove that someone else committed the crime.

As the director of her father's advertising company, Ma Yoo Hee (Han Ga In) is known as a witch for her ruthless, no nonsense character. After a string of failed attempts to hire a housekeeper, she (literally) runs into Chae Moo Ryong (Jae Hee), ex-medical student turned aspiring chef. As a way to work off his debt for crashing into her car, he agrees to become her housekeeper and personal love affairs coach for one month. Gladly, he gives her a makeover that attracts both her old friend Johnny Kruger (Dennis Oh) and her first love Joon Ha (Kim Jeong Hoon). Despite having a girlfriend, Sung Mi (Jun Hye Bin), Moo Ryong eventually finds himself falling for Yoo Hee.