A lost island in the ocean of time. A wild and inhospitable place from which it is impossible to escape. A place where Ulysses Moore would never want to set foot, but he has no choice, because that's where the key to finding Penelope lies. He doesn't yet know that the chain of events has already been set in motion and that his most dangerous enemy is returning from the past to exact revenge. For the Travelers in the Imagination, the moment of the decisive duel has arrived....