Sadie Smith - 34, unscrupulous, seductive, former CIA spy - is sent by an unnamed client to a remote area in the south of France. Their mission: to infiltrate a commune of anarchist environmental activists suspected of having carried out attacks. At first, Sadie looks with contempt at the idealists and the French provinces with their sleepy villages and farms. But then she comes into contact with Bruno Lacombe, the group's mastermind. Bruno rejects civilization, he lives in a Neanderthal cave and sees the salvation of humanity in the return to its origins. The confrontation with him causes doubts to germinate in Sadie, who is actually so hardened, and she, who thought she was pulling the strings, falls more and more under his spell. New product