Hanali City is a city full of unknown factors. It was destroyed in a war 300 years ago but has never been rebuilt. Public facilities encroached upon by green vegetation can be seen everywhere. At this time, six young people were standing at the back entrance of a dilapidated Hanali City hospital filled with creepers. The leader is a 19-year-old girl named Doli with a delicate smile and a pretty face. What truth is hidden in the weird and terrifying hospital in front of them? What kind of hidden secret does Doli have? (Because I dislike my poor writing skills, I am very likely to make major changes to the article. Although the plot will not change.)