This is a story about a piano, pitifully abandoned in the woods, and a young boy, Kai, who grew up playing it as his favorite toy. Now seventeen, Kai and Amamiya have traveled to Poland to take on the International Chopin Piano Competition. Amamiya hits the first-round stage, dazzling the audience a performance of unparalelled precision. And come the last day, it's finally time for Kai to unleash the forest piano!