At first glance, Phil Pendleton and his son Adam are just an ordinary father and son, no different from any other. What no one knows is that Phil is a prisoner, and that up until a few weeks ago and a chance encounter at a grocery store, he had never seen the child before in his life.

This forest isn't charted on any map. Every car breaks down at its treeline. Mina's is no different. Left stranded, she is forced into the dark woodland only to find a woman shouting, urging Mina to run to a concrete bunker. As the door slams behind her, the building is besieged by screams. Mina finds herself in a room with a wall of glass, and an electric light that activates at nightfall, when the watchers come above ground. These creatures emerge to observe their captive humans and terrible things happen to anyone who doesn't reach the bunker in time.

When Laurie was a little girl, she was forbidden to enter the room at the top of the stairs. It was one of many rules imposed by her cold, distant father. Now, in a final act of desperation, her father has exorcised his demons. But when Laurie returns to claim the estate with her husband and 10-year-old daughter, it's as if the past refuses to die. She feels it lurking in the broken moldings, sees it staring from an empty picture frame, hears it laughing in the moldy greenhouse deep in the woods.

When the Tuckers' next-door neighbor mentions someone rang their doorbell late the previous night, Sarah and Kenny Tucker check their home's security camera and discover something shocking: the doorbell ringer also visited their house and it wasn't a teenager playing a prank, but instead a terrified young woman with a shackle hanging from her right wrist. She anxiously pressed the doorbell again and again, glancing over her shoulder as if someone was coming for her, before giving up and taking off into the dark.

In the 1990s, heavy metal band Durt Wurk was poised for breakout success - but then lead singer Terry Hunt embarked on a solo career and rocketed to stardom as Koffin, leaving his fellow bandmates to rot in obscurity. Two decades later, former guitarist Kris Pulaski works as the night manager of a Best Western - she's tired, broke, and unhappy. Everything changes when a shocking act of violence turns her life upside down, and she begins to suspect that Terry sabotaged more than just the band.