The Korean Lee Dynasty is under attack from the Chinese Dynasty. They have infiltrated the land and are trying to break into the capital to defeat the last of The Lee heirs. Princess Soo-Yun lost her parents due to their attacks when they first breached the capital walls. She is now coronated to the the queen at only 21 years. Her bestfriend since childhood Prince Chan Bangh heard this and takes his troops to support her. He comes with his best Assassin and good friend Hwang Hyunjin, his Healer and fiancée Minji Park, his two advisors Kim Seungmin and Yang Jeongin. He also brings his General Lee Minho and the Sergeant Han Jisung.