An online novel writer got on a plane to attend a book signing. There was an accident on the plane. When he and the survivors on the plane woke up, they found themselves in a strange building. Here, the world and space seemed to have no flow. On his way to survive and instinctively escape, he encountered various monsters, such as mutated rats and autonomous tree vines. He also met various people, some of whom became companions, and some who died because of their greed and evil lives. After reaching the top floor, he discovered that everything was not as simple as it seemed...
Concept: Under the evil nature of human nature, any kind of monster may be born, and the only one who can save you is yourself.