After spending two decades in England, Bill Bryson returns to the U.S., where he decides the best way to connect with his homeland is to hike the Appalachian Trail with one of his oldest friends.

A suburban couple’s ordinary lives are rocked by the sudden discovery that their children possess mutant powers. Forced to go on the run from a hostile government, the family joins up with an underground network of mutants and must fight to survive.

Four student filmmakers set out to explore an abandoned building famous for its connection with the occult, but as their journey becomes littered with strange behavior and unexplained phenomena, it becomes clear the horror they are attempting to document may already be lurking among them.