With nuclear war looming, a military expert in underwater acoustics strives to prove things aren't as they seem—or sound—using only his ears.

• Pathé
• Trésor Films
• François Civil
• Omar Sy
• Mathieu Kassovitz
• Reda Kateb
• Paula Beer
• Alexis Michalik
• Jean-Yves Berteloot
• Damien Bonnard