The novel takes the teenager Mu Bei as its protagonist and tells the story of how he rises from a remote small town after accidentally obtaining the Primordial Divine Sword and practicing the Inverse World Sword Scripture. Due to the complete shattering of his meridians, Mu Bei is expelled from his sect. However, he unexpectedly acquires the special cultivation technique One Sword Transcends the World. With the momentum of "slaying the heavens, destroying the earth, and standing unrivaled in the world," he overwhelms powerful enemies. After going through family disputes and conspiracy challenges, he gradually climbs to the pinnacle of martial arts.
Set in the Ten Directions Heavenly Domains, the novel tells the story of Lin Tian, a transmigrator from Earth. After his family is persecuted by the Xiao Clan (the family of his fiancée), Lin Tian gains a new lease on life through a mysterious iron sword and gradually cultivates to become the Supreme Divine King. The worldbuilding encompasses the Ten Layers of Heavenly Domains, where each layer is connected via a spacetime portal, and the Tenth Layer hides the secret of eternal immortality. The cultivation system includes twelve Royal Physiques such as the Samsara Physique and the Chaos Physique, as well as three ultimate Eye Techniques. It integrates multiple hierarchies, including martial arts realms and weapon tiers. Key characters include Lin Tian, his master Lao Jiugui (the Old Drunkard), and his wife Wuyi. In the end, Lin Tian merges the Heart of Ten Dimensions to achieve the status of the Strongest Divine King.

