A scholarly, shy member of the rabbit-like Montmers, Perloo is content sipping myrtle tea and reading his history books in his warm burrow. Until the day Perloo's quiet life is interrupted by a mysterious summons from the Montmer leader. Drawing his smock string tightly around him, Perloo ventures out (through the worst blizzard since the Frog Year) to the Central Tribe Burrow to find out what their leader could possibly want with him.
So begins Perloo's incredible journey. A journey that will take him over snowy mountains, through underground tunnels, into enemy territory - and alter the future of Montmers everywhere.