Take on the role of DGSE agent to collect information on a nuclear test in the Western Republic. The country, invented, is placed under surveillance as part of the fight against nuclear proliferation. Between fiction and reality, let your imaginary colleagues guide you! But beware, redouble your vigilance, the walls have ears... In three parts, this exhibition-experiment reproduces the world of French information offices using numerous interactive devices. Enter the daily life of people whose actions can have terrible consequences on the world. Finally, discover the six contemporary cases in which French and foreign intelligence services have taken decisive action.