After his brother's wedding is crashed by an injured unknown, Zac Stone is sent south to investigate the man's possible origins. There, he finds Laie Village decimated. Unfortunately, the creatures responsible aren't the same as the ones the Hunters are used to dealing with. It seems someone has been training them, rendering most, if not all, of the Hunters' primary defensive tactics useless.

Zac realizes the danger runs much deeper than the Ua Hala—a clan of nomads bent on control of the island. There are greater masterminds behind these sudden changes, and they do not have the island's best interest in mind.

With no other choice, the Sone family and their allies set out across the island to spread the word and discover who is pulling the strings behind the scenes.