In the darkest days of World War II, the British Army formed a secret unit to infiltrate behind enemy lines and wage guerrilla warfare against the Nazis. Known as the Special Operations Executive (SOE), this brave band of spies relied on everyday items to carry out their missions, from sewing kits to hide explosives to pencils that were actually radios. Led by the indomitable Winnie, this inspiring true story reveals the spirit of a nation and the creation of a new kind of warfare, which paved the way for the modern special forces.