Shin Sarang just lived her life, continuing her dream to become a doctor. Her cheerful personality takes it all, not giving up on anything that block her way. One day, she saved someone's life, someone she never knew. Someone she always curious of. But there's always something to pay for when you do something. She lose her sight when she saved him. Sarang became a blind girl, and thanks to her sister, Shin Seulmi, she could continue her life. But her best friend, the guy who promised to keep her in his arms, the guy who promised his life for her, disappeared. She had nothing to do but to continue her life, writing her journey.

Kim Yesung, living in a world that every guy wants. Sparkling world, where all girls are falling for him. He was gifted with a beautiful voice, he could sing well. He has friends, who's working with him under the name of Super Junior. He's perfect, and he live his life to the fullest, living for his family and friends. But who knows? Any guy like Yesung, could feel loss, burdening him along his life. He cant forget his girl, he really cant. There's only one girl in his heart, one girl, where all his sad songs refers to. Where all his memories with her was dream-like, a feeling that he always like, someone that made him stable, made him happy. Ever since he lost his girlfriend, he cried a lot. But he continued as if nothing happened. His cold face, no one could ask why. He became quiet. He felt too stupid to hope, too sad to remember the memories, and too afraid to fall in love again. He had nothing to do but to continue his life, writing his journey upon a song.

But their life changed as they met each other. 

They never knew what life would be if they ever meet.

They never knew who will involved with them, or what they are involving to.