Yoon Jong Woo is a young man in his twenties who moves from the countryside to Seoul after his university friend, Jae Ho, offers him a job. Whilst looking for somewhere to live, he comes across Eden Gosiwon, a budget hostel where he shares the kitchen and bathroom with other residents. He is not impressed by the quality of the place or the other eccentric residents, such as his neighbour Seo Moon Jo, a charismatic dentist. However, Jong Woo decides to put up with it for six months until he has saved enough money to move out. However, mysterious events begin to occur in the flat, causing Jong Woo to start fearing the other residents.