This is a story about a high school campus, recording the long high school life of an ordinary high school student, her secret love, her life, and everything about her. The female protagonist in the story is Lin Guixi, and the male protagonist is Li Mu Shen. From the first meeting, Gui Xi fell in love with Mu Shen at first sight. She liked him, and he also liked her. However, an incident in their second year of high school separated them. When they meet again many years later, facing many obstacles, can they be together in the end? In the face of love and time, can they break through the challenge? Will this love that started in high school succeed in the end?