Jung Soojung's coffee shop business is failing. Some days, nobody even comes by anymore. Until one day, a handsome and mysterious man walks in. Day by day, he arrives at around 5 in the afternoon, orders the same hot cappuccino and stays until the shop closes. Soojung then finds herself intrigued and starts looking forward to him everyday. 

Kim Myungsoo likes writing songs but he never really planned on singing these. Yet one day, he has to fulfill someone else's dream. Trapped into giving up his own dream, he finds refuge in a small cozy coffee shop. Everyday, he sits by the window and composes music in his mind. Somehow, he unknowingly finds himself drawn by an inspiration for his song -- the beautiful coffee shop owner, with a seemingly sad look in her eyes.

Two hearts meet in a coffee shop, and a beautiful story unfolds.