The story begins in a city after the reform, and tells the story of the heroine Zhou Ying's process of being outspoken and lively until she has a clear understanding of love and hate. She can give everything for her beloved male protagonist Tu Jun. It is not until Situ Jun leaves that she discovers that the love she gives blindly does not necessarily have good results. After being tempered by pain, Zhou Ying slowly grows up and accepts the understanding of growth. Time went by peacefully. One ordinary morning, Zhou Yan received a strange text message, the content of which was "What if time could be turned back?" Situ's return caused ripples in Zhou Yan's originally peaceful life. How should she choose?