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.

Kenny and Ellis make a grisly discovery out in the forest. Boyd struggles with the reality of what’s happening to him.

Tensions run high at Colony House when word of the coming food shortage leaks out. A night at the clinic takes a terrifying turn.

Panic spreads through town as the residents face a chilling new threat to their survival. Jim realizes the magnitude of the mistake he made by enlisting Randall in his cause.

Boyd feels the town slipping away from him as the weather grows colder and the residents more desperate.

Boyd struggles to find a path forward as the town bids farewell to one of their own; Fatima's health takes a turn for the worse; Tabitha finds help from an unlikely ally.

Kenny leads a group into the forest in search of food; Donna and Ellis try to talk Boyd out of a dangerous plan; Tabitha makes a mind-bending discovery; Fatima questions the welfare of her unborn baby.

Boyd is forced to make a tough decision when newcomers arrive in town at nightfall; Victor unearths memories from the past in the hopes of finding answers.

Victor must face a painful reminder of his past; Julie looks for ways to cope with her trauma; Boyd struggles to keep the town safe as the residents begin to question his judgement; Tabitha tries to adjust to her new surroundings.

Fatima and Ellis make a big decision about her pregnancy; Boyd fears for the future of his family; Tensions rise in the Matthews house; Randall opens up to Marielle about his fears.

Tensions are at an all time high as the residents of town learn that one of their own has gone missing.