In the world of Erdas, only a rare few are able to summon a spirit animal in the way that 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. 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.