A group of people from different backgrounds are dragged into a cyclical world of horror by mysterious forces - "The Corridor". They must struggle to survive one after another in "copies" composed of distorted reality, urban legends, classic horror imagery and even historical tragedies. They must complete tasks or find a "way to survive" before they can temporarily take a breather. But the "corridor" itself is full of malice, companions may be more dangerous than ghosts, and the "safe zone" you return to every time is not absolutely safe. The protagonist not only has to fight against the terrifying existence in the dungeon, but also uncovers the truth about the "corridor", looks for the possibility of escape, and at the same time faces the abyss of human nature.