A post on the Guaitan Forum and a strange mobile phone application dragged Lin Xun into an abyss beyond comprehension. The hide-and-seek game on the abandoned campus ended in death, but he woke up on the cold classroom floor with irreversible horrific changes in his body. What is a ghost? What is APP? What secrets are hidden in that copper coin from the incense shop and that broken Taoist temple on the top of the mountain? The countdown to the next mission has begun, and the terror unleashed by him is quietly spreading in the real world...
