Unwilling to let the Germans occupy his islands unopposed, young Nick takes to the skies in a restored WWI fighter plane. Determined to learn to fly, he is soon photographing German patrol boats by day and flying dangerous bombing raids over Nazi airfields by night. Meanwhile, the evil pirate Captain Billy Blood returns to Greybeard Island. Kidnapping Nick's sister Kate, Blood transports her to Port Royal, Jamaica in 1781. If Nick ever wants to see her alive, he must come to Jamaica.