A historical drama set in the Koryo dynasty and focused on the relationship between a king and his bodyguard. Under the dominance of Yuan Dynasty China, the king of Goryeo Dynasty Korea is pressured to produce a successor to the throne. Unable to make love to his queen because he is in love with his bodyguard, Hong Lim, the king asks the two of them to sleep together instead. This sexual contact formulates a forbidden love between Hong Lim and the Queen.

Lee Hyeong is a talented songwriter. He happens to connect people who are not good with love. Those include Hyeong-Gyeong who wants to become a singer, but she suffers from stage fright. Scully is a high school student. She helps Lee Hyeong’s spirit. Chan-Young is a colleague of Lee Hyeong and he likes Hyeong-Gyeong, but in vain.

Ji-hyuk is an expert safe-cracker who lives the highlife stealing antiques and jewelry with his team. CHO, a powerful and cruel gang boss threatens them to steal $150 million with him. Ji-hyuk plans to get revenge on CHO, but ends up falling into his trap. However, CHO later realizes it was all part of Ji-hyuk’s scheme. When Ji-hyuk, who was thought dead, reappears, hidden secret relations between the technicians also surface.