Xie Guhong, a swordsman with a broken arm, entered the world with his broken body. He created his own crazy sword in his left hand for revenge, and met Wei Changfeng, a son of a noble family who had lost his family. The two of them travel together for different purposes, and are chased by the demon Xiao Wujiu. They meet the female doctor Bai Zhi who hides evil intentions, and fall into a series of traps by the imperial emissary Su Jianzhou. When the incomplete sword manual pieced together the truth about the ruins of Jiutian, Xie Guhong realized that the ancient sword intention was sealed in his broken arm - to use his broken body to smash Jiutian, not only for personal blood revenge, but also to open up a new world for martial arts.
