Paranormal investigators are called by the Morgan City, Louisiana, police department to the site of a shapeshifting mist near the town's lake. Alarm is raised when the mayor reports the hauntings have spread throughout St. Mary Parish.

The team arrives at a home where an eerie ghost girl has been befriending children for generations. When they discover a darker entity lurking in the home, the investigators must figure out how the two spirits are related.

The team investigates a limbless phantom at a historic plantation in Patterson, La.; they soon face more spirits than they bargained for after discovering a connection to voodoo and the deadly yellow fever epidemic.

A call from the Morgan City police sends the team to Louisiana's Atchafalaya Basin, where a trapper reports seeing two men vanish into thin air; a "Naked and Afraid" contestant reveals evidence of a dangerous pirate's spirit.

The bizarre report of a solider's ghost at an antebellum home brings the team to Franklin, La; as they attempt to contact the spirit, they discover the plantation was seized by Union forces before the Battle of Irish Bend.

The team takes on poltergeist activity connected to a gruesome murder in Berwick, La.; the case hits close to home after they link a baby doll from the crime scene to paranormal activity at their own headquarters.

The team uncovers the shocking history behind the location of their headquarters after an alarm is tripped at Morgan City's archives building; a surprise witness turns their investigation on its head.