Synopsis

A suffocating darkness descends upon a quiet town, a malevolent fog that twists the minds of its inhabitants. Dean and Sam quickly discern the source: a potent iteration of the black vein virus Amara had unleashed before, amplified to terrifying degrees. They join forces with the local sheriff to safeguard the community, but their familiar defenses prove useless against this new threat. As the town unravels, Chuck reappears, bearing an intriguing proposition.