Hyunseong, who is active as an influencer related to horror, goes on an expedition to abandoned houses once a week under the theme of exploring abandoned houses.
On this day, he received a tip that there was an old mansion in a very secluded mountain where rich people used to live, so he packed his bags and went into the mountains.
When I arrived, I found that the place looked scarier than I expected, and it looked like a mansion that had been maintained to a certain extent.
After much deliberation, the moment I opened the door to the mansion and entered, someone attacked Hyeonseong. When I came to my senses, I opened my eyes on the cold floor.
Hyeonseong tries to escape from the mansion to survive there.
However, someone blocked people from leaving the mansion, and they were able to find clues to escape through the letters in the mansion.

While exploring the house, Hyeonseong discovered something strange.
There were traces of some kind of ritual taking place in the house, and Hyeonseong sensed that he too would become a sacrifice to be used in this ritual.
In order to survive, Hyeonseong must do something.