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 drives up to Micah's house in San Diego, as she is moving in. 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 the couple and suggests Katie is being haunted by a demon that feeds off of negative energy and is intent on tormenting her. He advises not to communicate with the demon without a demonologist, but Micah continues to film and seek it out.