A socially withdrawn young man who loves reading novels in the real world transmigrates into the world of a novel, a world he knows best, where the long-lost path of sword cultivation reigns supreme. He originally believes that his thorough knowledge of the novel's plot will help him become the greatest sword cultivator under heaven. However, this world refuses to follow the original storyline. His devoted fiancée, his rival in love who idolizes him, and his father-in-law who offers him the leadership of his sect are just some of the eccentric villains who leave Xiao Long completely bewildered. As his journey continues, Xiao Long gradually gets used to these unconventional villains and their bizarre ways. With a great battle approaching, Xiao Long gathers the Demon Lord and the Heavenly Gods to sweep across the entire cultivation world.