The Matthews’ family road trip takes a horrifying turn when they are detoured to a small pastoral town from which they cannot leave. When their family RV crashes, Sheriff Boyd Stevens and other residents rush to save them before the sun goes down.

Jim, Tabitha and Ethan begin asking questions about where they are in the hopes it may lead them home. Ellis and Fatima show Julie the lighter side of life in town. Jade struggles to make sense of their situation. Boyd seeks guidance.

In the wake of another death, Boyd questions his decision to leave. Kenny steps up and embraces his new role. Jim rallies the town around his idea to build a radio tower. Fatima urges Ellis to make amends with his father before it’s too late.

Boyd and Sara journey deeper into the forest than Boyd has ever gone, encountering new and terrifying mysteries. Jim’s confidence in the radio tower begins to wane. An unexpected tragedy causes Donna to unravel. Kenny and Kristi share a moment.

Boyd draws strength from an unlikely source. Jim’s radio tower yields consequences which rock him to his very core. The hole that Tabitha has been digging leads her somewhere, and to someone, she could never have expected.

In Sheriff Boyd’s absence, Donna and Kenny struggle to manage the chaos as a busload of unwitting newcomers arrives in town. Victor and Tabitha go on a chilling journey through the nightmarish labyrinth of tunnels beneath the town.

A tense night in the diner as the residents and newcomers wait for sunrise. Fear permeates the wreckage beneath the Matthews house, as Jim and Tom struggle to keep a panicked bus passenger quiet.

Boyd fears he may have finally run out of answers, as the residents of town prepare for the end. Tabitha clings to the belief that the children could be the key to their salvation.