In an age of war, there was "Seonhwa Yoon," who possessed great martial talent. He gathered his sworn brother Yurim and six comrades to eradicate the corrupt emperor and nobles. He founded an empire where the people would not starve, placed his sworn brother Yurim on the emperor's throne, and gave his six comrades positions as the Six Kings of the Realm to support Yurim. However, Yurim and the Six Kings of the Realm, fearing the ever-growing prestige of Seonhwa Yoon, the God of War (Mushin), joined forces and murdered him. Perhaps a god heard the God of War's deep resentment? The God of War, Seonhwa Yoon, is reincarnated as the Fourth Young Master of the Sun Palace (Taeyang Palace) and sharpens his blade for revenge.