Set against the backdrop of World War I, the narrative focuses on the urgent challenge posed by German U-boats to Allied shipping in 1917, threatening Britain's food supply and industrial economy. Sir John Jellicoe, Britain’s First Sea Lord, collaborates with Rear Admiral William Sims from the US Navy to advocate for American support. The book explores the controversial adoption of convoy systems to counter the U-boat threat, revealing the complexities of naval warfare and the critical Anglo-American partnership that ultimately led to the U-boat's defeat.
