Three years ago, Lin Zhentian, the head of the Lin family, was worried that the Lin Bei family, who had rushed to Jiangcheng, would compete for the inheritance rights of the Lin family. He instructed the Song family in Jiangcheng to take action against the Lin Bei family. Lin's father was killed in a fake car accident, and Lin Bei was framed and sent to prison by his good brother Song Shijin and girlfriend Sun Qing. Lin Bei suffered a lot of torture in prison, and his family property was taken away. Finally, at the suggestion of Song Shijin, he was thrown into the cell where the Blood Demon was imprisoned. Unexpectedly, he was accepted as a disciple by the Blood Demon and gained supreme power. Before his death, the Blood Demon demanded that Lin Bei replace him and fight the Sword Demon for life and death three years later. Three years later, Linbei Town guarded the most terrifying Infernal Dragon Prison in the Dragon Kingdom, and Sword Demon came to challenge him to death. Linbei fulfilled his promise and returned to Jiangcheng