Few people have ever heard of him. And yet he has saved millions of lives. Stanislav Petrov, an officer in the Soviet Army, had to make a choice in 1983 that would have unforeseeable consequences. In the control centre where he works, a missile is detected attacking the Soviet Union from the US. The decision resting on Petrovs shoulders us whether the Soviet Union should respond immediately by launching nuclear missiles. A thriller that makes you realize how close the world came to an apocalypse.