Poet, the second prince of the Rabbit Kingdom, was never meant to inherit the throne. But when instrumental magic overturns the old order built on male vocal magic and the Ancient Tongue, he is pushed into the center of a rebellion against his own brother.

While fleeing, Poet pursues one fragile hope: Adagio, the woman who has appeared in his dreams since childhood. But Adagio is no ordinary woman. She began as the second personality of a dragonfolk man consumed by darkness, and is destined to split apart and awaken in a female body.

Joined by Growl, a fallen prince of the Dog Kingdom, Poet must confront a false Poet leading rebel forces to the capital, while his brother falls under a curse that will destroy both body and mind. To save his brother, stop the impostor, and protect a kingdom divided by song and war, Poet must face truths about lost female vocal magic, just intonation, and his own heart.