Haunted by deep guilt over engineering the catastrophic biological pathogen that brought human society to collapse, Dale travels across desolate city ruins alongside his young son, Noah. Their supply of C-7 inhibitors, the only medication holding the lethal contagion at bay, is on the brink of exhaustion. Arriving at a heavily guarded military refuge in search of medical assistance, Dale is instantly identified by Carla, a resident physician who remembers his scientific past. Seeing an opportunity, the outpost’s tyrannical commander forces Dale to embark on a perilous mission into the contaminated red zone to retrieve a vital research drive, sparking a desperate struggle for survival.