Yoon Jong Woo is a young man in his twenties who moves from the countryside to Seoul after his college friend, Jae Ho, offers him a job. While looking for a place to live, he stumbles upon Eden Gosiwon, a budget hostel where he shares the kitchen and bathroom with other residents. He isn’t thrilled with the quality of the place or the other eccentric residents, such as his next-door neighbor Seo Moon Jo, a charismatic dentist. However, Jong Woo decides to put up with it for six months until he saves enough money to move out. However, mysterious events begin to occur in the apartment, causing Jong Woo to start fearing the other residents.