This drama is about a prince is forced to live as a commoner and uses his gambling skills to take revenge on the King. Baek Dae Gil (Jang Geun Suk) is the best gambler in the Joseon era. He holds deep resentment inside, but is also cool on the exterior. King Yeongjo (Yeo Jin Goo) is a man who never lower his head without a convincing reason. Meanwhile, Dam Seo (Im Ji Yun) exists solely to take revenge upon king.