Ye Xiang Lun can be actually just a music student majoring in piano that transferred to Tamkang, a school famous for its musically talented students, especially those that play with piano. On his very first day of school, he finds a mysterious melody being played, and after it meets Lu Xiao Yu. She tells him that it is actually just a secret that cannot be told If he asks her to the song she was playing. The only form a friendship that evolves into a romantic relationship. However unbeknownst to Xiang Lun, there is more to Xiao Yu than meets the eye.