Yeop Hyeon, the crown prince of the Yeop family. Though he earned countless merits in numerous wars, all he received in return was the betrayal of his own clan. In the aftermath, even his dantian—the source of his internal energy—was destroyed. In that moment of despair, through a ring left by his mother, Yeop Hyeon is able to traverse a mysterious space where he can undertake a new kind of cultivation. A mystical training method where the sword replaces the dantian. Now, only one thing remains: bloody revenge against his clan. Surpassing the Yeop family, Yeop Hyeon’s journey begins to become the greatest master in Ganguk.