Avis Dolphin doesn't want to leave Canada and sail to England on the Lusitania. War is raging in Europe, and the Germans threaten to sink the ship. Avis is lonely and afraid until she meets a kindly professor whose stories of a magical island help her face an uncertain future. When the Lusitania is attacked, Avis must draw on all her newfound strength to cope with the confusion, terror and despair. How can she survive the sudden devastation of the ship? Will the people she cares about, especially the professor, live through the horror and danger?