Something has happened and Kim Jongdae woke up one day not knowing what. He doesn't feel his heart beat anymore. The whole of Seoul seems to have been evacuated. And to top it all off, it seems that he may be decomposing? 

Right now, all Jongdae has with him are his wallet and, a pen and book that he'd found while wondering the streets of Seoul. With those, he's on a mission to find out what's happening and to find himself some answers.