High school students Lin Cancan and Yang Jiaen are classmates and friends. Suddenly one day, a strange man appeared in Cancan's life, and Jiaen's parents came to pick up Jiaen every day. Cancan felt strange but had no one to tell her. Until one day she saw a man secretly meeting Jia En's mother, and on this day a strange old man also appeared in Cancan's life. Jia En's wealthy family background and her gradual intimacy with the monitor made Can Can unknowingly alienate the friendship between them. The old lady who replaced Jia En to accompany Cancan suddenly disappeared within a day, and Jia En was suddenly sent abroad by her father. All the plots that Cancan was looking forward to had nothing to do with her. She discovered that she was still an ordinary clown living in an ordinary family.