Young Jack McFee's prowess as a jump ship pilot has earned him the nickname Jumping Jack. He is only the second person to leap through the Wall, the great cloud of dust and gas bordering Scotian space. Jack would as soon continue patrolling deep space with his almost-too-smart ship's AI, but he won't be permitted. A drawn-out war that is not going well, attempts on his powerful grandfather's life, and the duty of protecting a princess-whom he rather...