An archivist takes a job restoring damaged videotapes and gets pulled into the vortex of a mystery involving the missing director and a demonic cult.

CDC researcher Abby Arcane investigates what seems to be a deadly swamp-born virus in a small town in Louisiana but she soon discovers that the swamp holds mystical and terrifying secrets. When unexplainable and chilling horrors emerge from the murky marsh, no one is safe.