Although forbidden to accompany his father on a mission to secure more stormphrax, Twig stows away aboard his father's sky pirate ship and takes a pivotal role in completing the mission. With a murderous villain who slices off his dead victims' toes, the story is not for the fainthearted, but many young readers who crave action and enjoy long books will find it a riveting tale. Stewart manages the many characters and the frequent shifts of scene well, driving the story at full throttle toward its inevitable climax.