[1] Set in Virginia, it tells the story of a documentary crew making a film about Alzheimer's patients who uncover something sinister while documenting a woman who has the disease.

Mia Hu, Gavin, and Luis are a team of students who want to create a documentary about Deborah Logan, an elderly woman with Alzheimer's disease living with her daughter, Sarah.

As the film crew records her daily life, Deborah starts to exhibit increasingly bizarre actions that her personal physician states are normal for someone with an aggressive form of Alzheimer's.

Things grow more tense after Luis and Gavin record audio of Deborah speaking in French, talking about sacrifices and snakes.

The others discover that Desjardins was supposedly trying to recreate an ancient Monacan ritual that would make him immortal but required the deaths of five girls that recently had their first period.

Sarah and Mia find Deborah as she is trying to swallow Cara's head in a snake-like manner and manage to burn Desjardins' corpse.

The film then cuts to news footage of reporters stating that Deborah was deemed unfit to stand trial for her crimes and abduction of Cara, her health having deteriorated rapidly in the months following the incident.