You’ll be safe here. That’s what the tour guide tells the Farmer-Bowens when they visit Plymouth Valley, a walled-off company town with clean air, pantries that never go empty, and blue-ribbon schools. On a very trial basis, the company offers to hire Linda Farmer’s husband, Russell, a numbers genius, and relocate her whole family to this bucolic paradise for the .0001 percent. Though Linda will have to sacrifice her medical career back home, the family jumps at the opportunity. But fitting in takes work. The pampered locals distrust outsiders, snubbing Linda, Russell and their teen twins. And the residents fervently adhere to a group of customs and beliefs called Hollow. But what exactly is Hollow? The more Linda learns, the more frightened she becomes. Should the Farmer-Bowens be fighting to stay, or fighting to get out?

When the Wilde family moves to the suburbs of Long Island, they trigger their neighbors’ worst fears. Dad Arlo is a gruff has-been rock star with track marks. Mom Gertie has a thick Brooklyn accent, with high heels and tube tops to match. Their weird kids cuss like sailors. They don’t fit with the way Maple Street sees itself. Though Maple Street’s Queen Bee, Rhea Schroeder, welcomed Gertie and her family at first, relations went south during one spritzer-fueled summer evening, when the new best friends shared too much. The Wildes are now outcasts. As tensions mount, a sinkhole opens in a nearby park, and Rhea’s daughter Shelly falls inside. The search for Shelly brings a shocking accusation against the Wildes.