In an alternate 1952, Britain lives under a shadow, twelve years after capitulating to Nazi Germany. A fragile reality is maintained by authoritarian rule as Churchill's underground resistance gathers strength. Amidst this turmoil, David Fitzgerald, a spy disguised as a civil servant, embarks on a perilous mission to extricate his friend and genius scientist, Frank Muncaster, from a Birmingham hospital. Frank possesses a secret that could sway the course of global conflict. As David maneuvers to save Frank—and potentially the world—the relentless Gestapo agent Gunther Hoth seeks the same prize, threatening not only the mission but the lives of all involved, including David's unsuspecting wife Sarah. This tapestry of espionage, affection, and moral dilemmas tests loyalties and courage, where personal sacrifices may alter history's course.