Deep in Yandang Mountain, there lived a forest guard. He chops wood and makes swords every day, but he never kills people with a sword, because the iron blade in his hand is just a fragment picked up from the battlefield. Ten years ago, he was Su Jinghong, a swordsman who traveled across the world; ten years later, he was an unknown woodcutter at the foot of Yandang Mountain. Until a group of men in black appeared, burning his hut and awakening his sleeping memories. When the broken blade was unsheathed and the dragon roared, he realized that some debts could not be avoided; some righteousnesses must be repaid. Since then, there has been one less forest guard in Yandang Mountain, and there has been one more knight-errant with a broken sword in the world.