When Chen Mo, who worked overtime until late at night, boarded the weird last bus, he didn't know that the ticket he took casually was already a "ticket" to the underworld.
The silent warning from the woman in red, the ghost sign with the word "death" engraved on the mailbox, the ringtone from the broken phone in the middle of the night... A series of horrific events that cannot be explained by common sense, such as the maggots in the tarsal bones, dragged Chen Mo, an ordinary social animal, into a bizarre and dark world.
In order to survive, he had to cooperate with a female professor of folklore who believed in science but had a psychic constitution, and followed the clues of "There is no way to bridge the gap" to gradually uncover the centuries-old secrets buried under this modern city. They discovered that what they encountered was not an accidental entanglement of lonely ghosts, but a huge conspiracy originating from an ancient curse and spanning the realms of Yin and Yang.