Paranormal Activity: After a young, middle class couple moves into what seems like a typical suburban "starter" tract house, they become increasingly disturbed by a presence that may or may not be demonic, but is certainly most active in the middle of the night. Especially when they sleep. Or try to. Paranormal Activity 2: After experiencing what they think are a series of "break-ins", a family sets up security cameras around their home, only to realize that the events unfolding before them are more sinister than they seem. Paranormal Activity 3: This takes you back to where it all began. The cameras are on and recording the chilling moments when evil begins to terrorize young sisters Katie and Kristi for the first time.