A kind, lonely little owl tries to earn an earthworm's trust and struggles with the knowledge that his new friends, a group of hummingbirds, must depart for the winter.
Soren and the rest of the band of owls in the great tree must fly to the mysterious Northern Kingdoms in order to prepare for the deadly attack against them, but St. Aggie has fallen to the Pure Ones and without Soren and his allies, their enemies will prevail.