In the shadow of the First World War, the legendary exotic dancer Mata Hari finds herself ensnared in a web of international espionage. As the French and German intelligence services engage in a high-stakes game of cat and mouse, the celebrated performer is accused of being a double agent. Her glamorous life of luxury and high-society connections becomes a liability, leading to her arrest and a desperate struggle to prove her innocence against a backdrop of global conflict and shifting loyalties.