Since childhood, Xiao Bai has suffered from an incurable disease that no one can diagnose. He only remembers that he spent his whole life in the hospital and does not know the world outside it. But one rainy evening, a young doctor named Fei Yu comes to him and says that he wants to take Xiao Bai home and save his life. To the sounds of the gentle melody of qin, memories of the distant and mysterious past in which he and Fei gradually awaken in Xiao Bai’s soul You knew each other...