Sun Jiuchen, a folklore researcher at the Municipal Cultural Center, always regarded his grandfather's identity as a "Tongyin man" as an old legend until his grandfather suddenly passed away. He dug out among his belongings a sandalwood token engraved with the word "Ape Si" and the repeated warning "Don't let things run out of town."
The dark monkey on the locust tree in the middle of the night broke the peace - the half-human-tall evil spirit had skin like dead gray carrion and a face without eyes and black holes, and specialized in stealing the souls of children. When Dou Dou, a six-year-old neighbor, was abducted into a water tank by Yin Monkey and was about to die, the sandalwood token in Sun Jiuchen's palm suddenly erupted with hot golden light, defeating Yin Monkey and tearing apart his understanding of "folk customs".
But the crisis was far from over: blood-colored clouds suddenly enveloped the sky, making people breathless, and giant non-human creatures roared from the distance. When the golden light flashed, he even caught a glimpse of countless evil things hidden in the corners of towns, mountains, forests, and the sea. Only at this moment did Sun Jiuchen realize that what his grandfather was guarding was never a monkey town, but the first line of defense against the coming global terror. And he had been forced to take over the responsibility of the "monkey town" and stand at the forefront of this catastrophe.
