The transport ship Orion is four months out of Earth when catastrophe strikes - leaving the ship and everyone on board stranded in deep spaceSuddenly it's up to thirteen-year-old Beth and her friends to navigate through treacherous and uncharted territory to reach safety.

Together they roam their world, fighting other Constructs and absorbing them into their own. But when a new and dangerous Construct attacks them, Coll is thrown clear from Wolf and left behind.