 Xiao Jiang discovers that Luke had previously had a romantic affair with a young male university student, called Han Dong, whom he had met at the university campus, together with Han Dong's girlfriend, Xiao Ning.Xiao Jiang accidentally discovers a secret that provides a key to Luke's past, enabling him to subsequently track down Xiao Ning to find out more.Although she proves to be unhelpful and deceitful, he begins to be able to piece together the mystery of Luke's inability to speak.