On a rainy night in Changzhou City, there is a door leading to the "abyss".
Lin Yin was originally an ordinary shopkeeper who ran the "Everything House", but because of a black long-handled umbrella, he was forced to be involved in a cruel game that spanned reality and the other world. Here, he is the cursed "gatekeeper" and the hunted "alien" K117. His left hand is a dark vortex that swallows abnormal shadows, and his right hand is a light blue pattern that purifies sin. He must fight in the "liminal zone" that overlaps once every seven days with his crazy brother Lin Jin, the mysterious organization "Scavenger" and the "scavengers" lurking in the dark.
When memories are proven to be forged lies, when relatives are revealed to be pawns in experiments, and when the entire city becomes a huge source of nourishment for the operation of the "system", Lin Yin must face the truth that he is neither human nor ghost.
This is an extreme pull on identity, memory and existence.
In a world of lies, only the umbrella in his hand can hold a glimmer of truth for him.
