GenTech Corporation scours the wastelands, desperate to reclaim the last living trees from the young thieves who stole them. But Banyan no longer has the trees he and his friends smuggled south. Hunted and betrayed, he must trust in strangers as he tries to find his old friend Crow and gather feuding tribes together in preparation for war. As the battle for the trees begins, Banyan is reunited with the girl who always gave him hope, but he finds Alpha has changed in ways he'd never imagined. And when they embark upon a final journey to Vega with the goal of taking down GenTech forever, Banyan must choose between fighting for a conflicted world or saving the lives of the people he loves.