Greta is the Crown Princess of the Pan Polar Confederacy, a superpower formed of modern-day Canada. She is also a Child of Peace, a hostage held by the de facto ruler of the world, the great Artificial Intelligence, Talis. The hostages are Talis’s strategy to keep the peace: if her country enters a war, Greta dies. The system has worked for centuries. Parents don’t want to see their children murdered.