Beneath the splendor of the modern metropolis lies a Yin Vein, a fissure between yin and yang that has stretched from ancient times to the present. It is home to countless ghosts, demons, and monsters, and maintains the delicate balance between the mortal world and the underworld. Now the Yin Vein is suddenly expanding at a terrifying pace, the boundary between yin and yang is fading, and uncanny disasters are sweeping across the city as demons and spirits openly wreak havoc.
Lin Ye was an ordinary boy until his grandfather died under mysterious circumstances. He took over a late-night grocery store in the old district, unexpectedly inheriting his family's generations-old duty as a night patrolman of the Yin Vein. Burdened with an inescapable family curse, he became the last night watchman in the world. From then on, his eyes could see yin and yang, he held a bronze patrol token in his palm, and a battered secret manual in his arms. Forced onto a perilous path through the night, he had to slay demons, suppress evil, and seek the truth.
A faceless ghost on the midnight bus, a blood-soaked vengeful spirit in an abandoned hospital, a thousand-year-old blood sacrifice in an ancient town, murderous urban legends circulating online, and long-buried secrets in ancient tombs come one after another. Together with a talisman-wielding Daoist nun, a battle-hardened man, a genius hacker, and other companions, Lin Ye confronts the schemes of the underworld, conflicts among myriad demons, and a calamity wrought by fiends from beyond the realm. Along the way, he uncovers the origins of the night watchmen, the secrets behind his family's curse, and the ultimate truth of the Yin Vein.
When war between yin and yang erupts and the three realms teeter on the brink of destruction, Lin Ye, bearing the weight of all living beings, will ultimately sacrifice himself and seal the Yin Vein with his own flesh and blood, guarding the mortal world through the long, dark night and preserving peace for an entire age. Chinese folk-horror meets urban mystery and the uncanny, with constant twists and mounting suspense. A fateful night patrol spanning yin and yang and shaking heaven and earth begins here.
