When Katie (Katie Featherston) and Micah (Micah Sloat) fear their San Diego, Calif., home may be haunted by a demonic presence, Micah sets up a video camera to document all the jaw-dropping, hair-raising action over a series of several nights in fall 2006. The paranormal occurrences increase in frequency and significance, leaving Katie more and more distraught — and determined to put an end to the terror.