A message by Sir Thornberry lures both the Gummis and Igthorn back to Ursalia, where a new band of Gummis, the Barbics, have taken refuge. The new tenants, however, are mostly a rather unsociable bunch with a deep hatred for all humans. They seek the ultimate weapon in Ursalia to get revenge against the humans, and as it so happens, this weapon is close to falling into Igthorn's hands.

Eager to meet the Barbics, Cavin accompanies the Gummis on a trip to Ursalia. He is at first not welcomed by the Barbics, but soon gets the chance to prove himself in a manhood ritual which Buddy has to undergo in order to become a full member of his tribe. However, a pair of satyr poachers are on the prowl looking for furs to line their purses – and the Gummis just so happen to be quite hairy ...