In the world of Erdas, only a rare few are able to summon a spirit animal in the way Conor, Abeke, Meilin, and Rollan have. The bond they share with their animals is a partnership that allows them to access more-than-human abilities.

But what if there was another way to create a spirit animal--to force the bond, giving the human partner total control? And what if someone with selfish intentions was offered this gift . . . with a catch?

The four young heroes have barely had time to come together as a team, and their own spirit animal bonds are still greatly untested. But now they face a brutal confrontation against an enemy who will break any rule to defeat them.

1. Wild Born
   
2. Hunted
   
3. Blood Ties
   
4. Fire and Ice
   
5. Against the Tide
   
6. Rise and Fall
   
7. The Evertree