The story begins with an ordinary monthly exam results release. Lanzhi ranked second again, and the first place was Mu Chen, who had transferred from school. Reluctance and curiosity drove her to submit a "letter of challenge", but unexpectedly started a battle that went beyond scores and went straight to the soul. From the "mirror method" duel in the library, to the brief sharing of umbrellas in the rain in the used bookstore, from the unknown "Moonlight" ensemble in the abandoned piano room, to the silent protection and approach again and again under the pressure of reality...
