Is there someone you can't forget in your youth? Sunny high school student Wang Xiaoxia (played by Li Mu) fell in love at first sight with the genius transfer student Cheng Yi (played by Cao Youning) by chance. Xiaoxia couldn't control her heartbeat, so she started a high-profile pursuit of love. And Youzi (played by Lou Junshuo), who grew up with her and silently protected her, also decided to fight for herself. On one side is the male god who fell from the sky, and on the other side is the guardian of the childhood sweetheart. The 17-year-old boy has the most passionate love. How should Xiaoxia choose?