In early fall 2019, Geneva faces an unprecedented security crisis: the imminent attack by an anti-capitalist terrorist group known as the Global Liberation Front (GLF). The Swiss army is immediately called upon to assist the police force in containing the threat to Calvin’s city as quickly as possible. This is the extraordinary plot of LUX, which shows a huge miltary simulation exercise that took place in Geneva from October 1-10, 2019. Ten days where 1,500 soldiers took part in a life-size game, between city and countryside, to tackle a fictitious threat. While exploring the ambiguous relationship between reality and fiction, LUX offers a poetic desire to draw the viewers away from preconceived ideas in the heart of one of the most unique armies in the world and one of the most controversial institutions in Switzerland.