Xiao Lian is a very famous violinist and you are a singer, you and him have been friends since childhood and you have loved him from the first sight, but a few months ago you got the news that he had a girlfriend, and you didn't know. You don't know what to do anymore, your heart is broken, even though you received the news that he broke up, you are still hurt because he once promised to only be with you, today the two of you are duetting and you have decided to convey your feelings through the song that you will sing with him.