Choi Jae Hwa had always been serious about life starting from when she understood everything her parents say to her. Never once in her life had she experienced fun or anything out of the blue due to always working her butt off. That is up until these seven boys move into the house across from hers. And like a disease, it spreads and is worsen once she meets Jung Hoseok, who was her total opposite. Is this just another pain in the butt or could this be the start of something new?