Molly Mahoney is the awkward and insecure manager of Mr. Magorium's Wonder Emporium—the strangest, most fantastic and most wonderful toy store in the world. After Mr. Magorium bequeaths the store to her, a dark and ominous change begins to take over the once-remarkable Emporium.
In 1979 Ohio, several youngsters are making a zombie movie with a Super-8 camera. In the midst of filming, the friends witness a horrifying train derailment and are lucky to escape with their lives. They soon discover that the catastrophe was no accident, as a series of unexplained events and disappearances soon follows. Deputy Jackson Lamb, the father of one of the kids, searches for the terrifying truth behind the crash.