On July 2, 2022, two criminals set out to rob a jewelry shop in Geneva. But even with a foolproof plan, their "perfect" heist will prove far from uneventful. . .

Twenty days earlier, on a luxurious estate along the shores of Lake Geneva, Sophie Braun prepares to celebrate her fortieth birthday. Her life seems perfect: she has a fairytale marriage, two perfect children, and lives in a stylish modern mansion surrounded by lush forest. But her idyllic world is about to crumble. Her husband is becoming embroiled in petty schemes. Her neighbor, a policeman with a spotless reputation, is obsessed with her and spies on the most intimate moments of her life. Then, on her birthday, she receives a gift from a mysterious prowler that endangers her life.