Paranormal Activity is a 2007 American supernatural horror film produced, written, directed, photographed and edited by Oren Peli. It centers on a young couple (Katie Featherston and Micah Sloat) who are haunted by a supernatural presence inside their home. They then set up a camera to document what is haunting them. The film uses found-footage conventions that were mirrored in the later films of the series.

Plot

Katie and Micah move to a new house in San Diego. Katie claims an evil presence has been haunting her since she was a child, so Micah sets up a camera in their bedroom to record any paranormal activity that occurs while they sleep. Psychic Dr. Fredrichs visits Katie and Micah, who suggests Katie is being haunted by a demon that feeds off of negative energy and is intent on tormenting her. She said something like this happened to her and her younger sister Kristi when they were kids. He advises not to communicate with the demon without a demonologist, but Micah continues to film and seek it out.