Phantom Swordsman Dokgo Heon, an unrivaled master of the Unorthodox Faction, and Hyun Jo, the master of the Mount Hua Sect, forged a friendship through crossing blades. <br><br> However, the Demonic Cult launched a sudden attack, tragically ending the life of Hyun Jo. <br><br> At the brink of death, Dokgo Heon possesses the body of Hyun Jo's disciple, Mu Hwi... <br><br> ...and thus began Mu Hwi's struggle in fulfilling his friend's dying wish—to save the Mount Hua Sect.