With the wise guidance of King Crispin, the animals of Mistmantle have enjoyed a long period of peace and prosperity since the violent Raven War.

The tranquility is disrupted when a series of tidal waves threatens to destroy the island. The inhabitants must quickly move to higher ground to avoid the devastation. But Mossberry, an influential squirrel with delusions of grandeur, sees the impending disaster as an opportunity to rise to power...and his reckless decisions will put many citizens in harm's way.

In a race against time, Urchin of the Riding Stars, his page, Corr, and the Circle of King Crispin's court must stop Mossberry and usher the animals of Mistmantle to safety. And when the rage tide sweeps a beloved islander beyond the mists, there is only one thing to be done.