This novel tells the story of the protagonist Jia Guo who meets Zhou Yushu, the girl he loves most in his life. The conservative Zhou Yushu has been having an innocent campus love with Jia Guowei. Faced with Zhou Yushu who refuses to cross the bottom line, Jia Guowei slowly begins to have an affair mentality, and finally turns into a fact. After the incident is revealed, will Zhou Yushu forgive him? What else would Jia Guowei think? How will things turn out?