Being able to pass one of the most prestigious Universities in Seoul, Gaeul was forced to move from Gwangju to Seoul. Her family was so enthusiastic about her passing in that school. Unfortunately, when she got to Seoul, she found it hard to find a cheap apartment to live in, while the expensive ones has still available rooms, she couldn't afford them.

She finally found an apartment building, but it was full already, but there was one apartment with three rooms, and one of the rooms were not occupied. However, there were two other guys who also live in that apartment. The owner of the apartments suggested she stayed in that one, since one room was still unccuppied. Will the two other guys allow her? Gaeul has almost given up looking for a place. She thought she would just go for it! But what will happen when she gets to live with them?