Jewel Delis has accompanied her half-brother Paul to this verdant paradise. Her task is to help Paul decipher the strange language of the Mossen - but she has a secret mission too. A new law on Earth means the imminent massacre of all beasts great and small, so Jewel must discover if Moss holds the promise of sanctuary for the doomed animals - once humankind's beloved companions.
Time is running out for Jewel's creatures, but it might be running out for Humanity too: the Planet Moss, itself a living entity, is not sure it cares for any of the species currently living on its surface . . .