The story of Britain's first female agents sent to the front line during the Second World War and spymistress Vera Atkins, who led them. In the face of danger, Vera ramped up her recruitment of female agents. Chaos ensued as the Prosper circuit in Paris neared collapse. Meanwhile, Noor, deep in Parisian resistance, struggled to maintain cover. Vera enlisted agents like Violette Szabo and Yvonne Baseden, but uncertainty shrouds their upcoming missions.

While Europe rejoiced over victory in the Second World War, Odette Hallowes' struggle at Ravensbrück revealed telling information about other agents in prison. Spymistress Vera Atkins' investigation intensified in Karlsruhe prison and Ravensbrück, focusing on espionage agent Noor Inayat Khan's fate.