Lee Seung-Hyun and Han Eun-Ae spent their lives running from trouble. They are runaways. Getting beat. Feeling unwanted. Feeling unloved. Until one day Eun-Ae came to Seung-Hyun's rescue. But Seung-Hyun didn't want to be saved by no girl. He didn't like her and she didn't like him. The more Seung-Hyun tried avoiding her, the more he cared about her. And the more curious he became to find out why she was so hurt and scared of the world. And soon, they discovered their love for one another. So they kept their love only for themselfs, in memories, and in a special music box. A special music box only their ears could listen to. But when it seems everything is perfect, they run into some trouble and get split up...