Peter Taylor (Kevin Bacon) and his family go on a vacation to the Grand Canyon. Bronny, the wife, seems like she's having a good time, daughter Stephanie (Lucy Fry of WOLF CREEK: THE SERIES) is a moody teenager and their son Michael (David Mazouz of GOTHAM) is their autistic son. Michael wanders off and falls through a hole in the ground to a hidden grave. Here he sees ancient cave drawings by the Anasazi and comes across some rune stones. Once they return to their suburban home strange things begin to happen. Michael has a new "invisible friend", which is really a malevolent entity, and animals such as a crow, rattlesnake and wolf appear. These are all representations of the entities trying to emerge from the "other side".
Basically, this follows all the cues from the original POLTERGEIST with some family drama thrown in, which I didn't really care about. There are also some horrendous continuity problems at the end. It looks as though they reshot the "climactic ending" at least a year after the rest of the movie was done because the actor who portrays Michael is about five inches taller and looks older. It was really distracting. This movie is simply abysmal.