Park shin hye and Lee min Ho had been best friends ever since they can remember. There was no walls between them as they were inseparable. In the past Lee min Ho and park shin hye would build a tiny house as kids and promise to live in it when they grow up. But soon they grow up and they're thoughts change, so does their feelings.  Park shin hye who once thought of min Ho as her husband in her childhood, considers him only as her best friend. But whereas min Ho had started falling head over heels for her.  They fight they argue on their feelings, until one day shin hye was forced to move into her grandparents house. What will happen to min ho. Will shin hye realise his love for her.