Young Lu Tianxing accidentally falls into the underworld. Starting out as a trainee underworld bailiff, he meets various people with the help of his companions and investigates the truth behind the disappearances of wandering souls and attacks on celestial beings. Through countless trials, he continually grows stronger, absorbs different kinds of power, and steadily rises through the ranks, only to be falsely accused and unjustly punished. His close friend Lian Chunxu sacrifices himself to save him, allowing him to return to the human world. To save his friend and uncover the mastermind behind the conspiracy, Lu Tianxing joins forces with various factions and bravely confronts the conspirators. Eventually, the truth comes to light and the crisis in the underworld is resolved. Lu Tianxing is appointed to an important position and continues protecting the balance between the worlds of the living and the dead. However, turmoil once again erupts in the Heavenly Realm's Hidden Dragon Abyss, where a mysterious force sets its sights on him. A new adventure is about to begin.