A terrible industrial accident changes Little Dinki's life forever. Now Dinki's fate may ride on the wings of her eccentric friend Birdboy, a misfit who hides in the Dead Forest, lost in his fantasies... a beautiful, haunting tale told with stark, stylized animation based on a graphic novel.

Teenagers Birdboy and Dinki have decided to escape from an island devastated by ecological catastrophe: Birdboy by shutting himself off from the world, Dinki by setting out on a dangerous voyage in the hope that Birdboy will accompany her.