"Breathe" unfolds in a future where Earth has become uninhabitable due to oxygen depletion. Maya and her daughter Zora eke out a perilous existence underground in East Flatbush, relying on a scarce oxygen supply and the memory of Maya's husband, Darius, who designed a life-saving oxygen suit before his presumed demise. Their fragile existence is shattered when strangers claiming knowledge of Darius's fate arrive, thrusting Maya and Zora into a fight for survival against unknown intruders.