Qi Zhaoming, a senior engineer at the State Grid, has another identity: the 49th generation descendant of the hidden Taoist "Tiangong Pavilion". When strange accidents occur frequently in UHV substations, the Bureau of Paranormal Investigation involves him in a series of supernatural cases. The Millennium Drought Demon is reborn with the help of the smart grid, the ancient thunder beast is revived in the cable tunnel, and the digital spell dances with the quantum compass to reveal the missing "armature chapter" of "The Book of Lu Ban". This battle spanning the laws of physics and Taoist rituals will determine whether civilization will continue using copper wire or peach wood as the carrier.