故事根据金容基的网络漫画《惊悚考试院》改编，以考试院为背景，描述从乡村来到首尔生活的一位少年发生的一连串奇怪的事件，而且身旁的每个人也都怪怪的……Yoon Jong Woo is a man in his 20's. He has lived in a small town for all of his life, but he gets a job at a small office in Seoul. Yoon Jong Woo moves out to Seoul and stays at a cheap apartment which shares its kitchen and bathroom with other residents. He doesn't like staying at the apartment and he doesn't like the other residents who seem weird and suspicious.