Kyungsoo, Chanyeol, Seulgi, Jongin, and Irene. These five persons are desperate for finding a place to stay. Kyungsoo is a fresh graduate who already got a job but not a place to stay. He ask Chanyeol, his best friend since high school to get a place together. Chanyeol is a college boy that looks like he’ll not going to graduate very soon even he already in his senior year at college. He knew that one of his other best friend and also his junior, Seulgi, is having a hard time to find a place to stay too. So , he offer Seulgi to join him and Kyungsoo to find a place to stay. Since Seulgi have a twin named Jongin, she needs to bring him together with her. And she also offer her best friend, Irene (more like un-blood-related older sister) to join all of them since she get the same problem too and so that Seulgi won’t be the only woman who lives with those guys. They finally find a house, 2 floor, 2 regular bedroom, 1 bathroom, 1 master bedroom including a bathroom inside. The kitchen and living room already furnished by the owner and all they need to do is furnished their own room. Since Kyungsoo is the one who is paying much more than the other for the house, he got the master bedroom. Chanyeol and Jongin will be in one room, and Seulgi with Irene in the other room. What would happened between these five different personalities and different problem living together under the same roof?