During a family trip in a balloon, a storm breaks out, and Tae-eul, a young boy of 3 years, falls into a lake called "Lake of the Shadows." He is unfortunately bitten by a snake. A man living in an "enchanted forest" comes to his aid and managed as best he could to save him. 10 years later, Tae-eul grew up and attended the village school of Chaoring, where he trained in martial arts. But he eventually renewed several times without reaching the level increase, for lack of will ...