Publisher from Amazon.com.

"Banyan was once a tree builder, creating scrap-metal forests for rich clients in a barren burned-out world. Now he's traded his scaffolds for lookouts, his tools for guns. On a stolen boat, surrounded by a mutinous crew, Banyan has escaped from Promise Island with the last living trees on earth, and he's desperate to smuggle them to safety. But powerful enemies are in pursuit, seeking to claim the trees for themselves. To reach a safe haven, Banyan will need the help of the pirate girl he loves, Alpha, his broken friend, Crow, and his troubled sister, Zee. Only together can they cross the mysterious molten wasteland of THE RIFT. And when Banyan discovers a new threat to Alpha's life, he fears he'll lose not only the trees they sacrificed so much to find, but the girl who inspires him and gives him hope"--Back cover.