A Quiet Place is set in a world where it has been taken over by monsters that have super hearing. They explore the world using clicking noises that reflect surfaces similar to echolocation. The world has been destroyed and because of this, the family speak in sign language to avoid detection. They walk barefoot and barely speak. Sound equals death. Literally. They’ve changed everything about the way they live to minimise sound and loud noises. The slightest whisper or small noise will end in death.
If they hear you, they hunt you.