Spirit Animals is set in the world of Erdas, where children go through a coming-of-age ritual to determine if they have a “spirit animal,” which represents a bond between human and beast that bestows each with great power. The story centers on four children from different cultures who undergo the ritual and discover they have been chosen for a greater destiny.

Deep in the desert there sits a beautiful oasis, ruled by a monarch unlike any other in Erdas. His name is Cabaro, the Great Lion, and he reigns over a kingdom of animals, jealously guarding his golden talisman. No human has ever set foot in the Great Beast's territory. The journey to his oasis is impossible.

As a team, Conor, Abeke, Meilin, and Rollan have achieved the impossible before. But now that team is brokenthe friends scattered by a devastating betrayal. 

 The young heroes and their spirit animals have already sacrificed much in their quest for the talismans. But with the world crumbling all around them and a ruthless enemy opposing their every move their greatest sacrifices are yet to come.