Lin Han has been known as the "ghost-faced academic master" since he was a child. He follows the rules and is self-disciplined, but he hides an extreme desire for control. One time while investigating ghosts at an abandoned train station, Lin Han picked up a worn-out ticket with the wormhole formula engraved on it, which triggered the folding of time and space, and his soul merged with the night watchman of the underworld. With the golden finger "wormhole in the underworld", he can travel between the underworld and reality, and glimpse the deepest secrets of people's hearts. However, Shen Mo, his most trusted friend, secretly colluded with the Yin Division traitors in an attempt to use Lin Han's power to tamper with the Yin and Yang order. Faced with betrayal, strange deaths, and serial murders, Lin Han must protect his family and relationships with warm-hearted tenderness under a mask of indifference. Every activation of the wormhole will tear apart his inner desires and reason, which is both a salvation and a trap. As the wormhole spreads and the entire city is pulled into a supernatural storm, Lin Han must make a choice: conquer the wormhole, control his emotions, or let the world fall into eternal night.
