Deep in the quiet campus, there is a secret that has been hidden for ten years. Jiang Anyu, a lonely girl who keeps transferring schools, meets the mysterious and outstanding Du Qiran. The two bonded over a silent piano piece, but they didn't know that there was a thrilling past hidden behind the tune.
Ten years ago, Lin Yuqing, a music student, fell to her death under the moonlight. The cause of her death is a mystery, leaving only a mute piano and a damaged butterfly specimen. Ten years later, Jiang Anyu and Du Qiran discovered during their investigation that Lin Yuqing's death was related to a dangerous sonic experiment. Behind the experiment, the principal, professors, and a mysterious organization hidden in the shadows of the campus were actually involved.
As the investigation deepened, they discovered that Lin Yuqing's experimental notes, silent piano music, the resonance frequency of butterfly specimens, and even the nightingale's song all pointed to a shocking truth: sound can kill, and Lin Yuqing was the first victim of this experiment.
However, the truth is much deeper than that. Du Qiran's life experience, Jiang Anyu's past, and the looming bond between them are all inextricably linked to this experiment. In the process of pursuing the truth, they not only have to face threats from the outside world, but also face their inner fears and struggles.
Intention: Find light in the darkness, find yourself in the truth.