A door burning with flames opens the boundary between reality and the strange world. Those who are chosen by the strange world must step into different instances again and again, struggling to survive among the intrigues, rules, lies and old grudges. Detective Shen Xu originally thought that he just entered by mistake, but when he and his assistant Cheng Yuanzhi walked out of the strange world behind the door alive one after another, they discovered that what was truly terrifying was not the tricks in the copy, but the "survival" itself, which was not that simple at all. Infinite flow, reasoning, weirdness, micro-thriller, escape, calculation, finding a way out.
