A young man possesses the rare talent of being able to identify every sound he hears. Aboard a French nuclear submarine, everything depends on him. He is the Golden Ear. His reputation for infallibility takes a knock after a mistake puts the lives of the whole crew in danger. His determination to win back his comrades' trust drags them into an even more dramatic situation. In the world of disinformation and nuclear deterrence they find themselves caught in a crisis spiraling rapidly out of control.