When young Tomura listens to a piano tuner at work, he is transported by the sound back to the high, rustling forests of his childhood, and from then on, his life is shaped by a passion for music. He learns the craft of piano tuning, but despite his dedication in search of the perfect sound, there is always the fear of failure. When he is tasked with tuning the piano of the two sisters Kazune and Yuni, he must realize that it is about more than just technical skill. And when he hears Kazune, the aspiring concert pianist, play, he feels the calling of his life: to make her performance shine.

A novel full of poetry about the life-changing power of music.