Until four years later, until Xiao Nan appeared in Xia Tong's life in a completely unexpected identity, everything seemed like a magic box being opened, and all the dust-laden past events began to emerge. Xia Tong could not forget the person who abandoned her four years ago, but Xiao Nan, who she had always regarded as a brother, expressed his love for her. Those green days are gone, and all her feelings seem to be fermenting and deteriorating. When she finally has the courage to face new challenges, her former love suddenly appears and wants to stay, and everything takes a turn for the worse. Where should she go?