Thirty-nine students from Class 9, Grade 3, were trapped in school. There was only one teaching building with lights on in the entire city. And the strange existence calling itself "7137" told them: if they want to survive, they must complete the dungeon mission.
And all this is the beginning, everything is the past.
Concept: In extreme environments, the glimmers and cracks of human nature are magnified at the same time. When survival becomes the only proposition, choosing trust or betrayal, sacrificing others or preserving oneself, every decision tortures the bottom line of this group of teenagers. The real monster is never in the copy, but between the fears and desires deep in everyone's heart.