Since she left the wolves who raised her to cross over the Iron Mountains, Firekeeper's pack has expanded to include a diverse assortment of creatures – human and not. When the wolf-woman receives a desperate call for help from the jaguar, Truth, Firekeeper – Blind Seer, as ever, at her side – races to Truth's aid.

Over a year prior, Truth sacrificed her sanity in a valiant effort to keep Firekeeper alive. Now there may be a way for Truth to reunite her fragmented mind with her failing body – but the jaguar needs Firekeeper to open a door, that is not quite a door, if that is to happen.

How to release Truth may be only the beginning of Firekeeper and Blind Seer's problems, for there are hints that an ancient power may be released along with the jaguar – a power that uses living creatures as playing pieces, and who has more than a little interest in Firekeeper herself.