Exhaustion and inherited mental health issues—revealed to have plagued his mother—lead him to see the basement floor "breathing" and imagine conspiracies where there are none.
In a climactic breakdown, Matthias digs a massive hole in the basement, convinced the factory victims are buried there. He eventually falls into the pond, mirroring his childhood trauma. Pol and Liv manage to save him, providing a moment of resolution to his long-suppressed past. The IMDb reviews and Rotten Tomatoes consensus note that while the atmospheric "noise" drives the tension, the "conspiracy" was largely a product of Matthias's deteriorating mental state. Noise (2023) Netflix Movie Review Noise FRENCH WEBRIP 720p 2023
Liv discovers that Matthias’s mother, Michelle, suffered from postpartum psychosis and drowned herself in the family pond while holding baby Matthias; Pol saved the baby but couldn't save her. The Conclusion Pol and Liv manage to save him, providing
He becomes hypersensitive to sound, particularly the relentless crying of his newborn son. mirroring his childhood trauma.