Called to a remote winter cabin to investigate a couple's unexplained disappearance, Texas Rangers Ruth Baker and Aaron Tate uncover a chilling scene that hints at a pattern of brutal killings beneath the snow-covered wilderness. As a vicious storm traps them in isolation, they realize they are not alone — a deadly predator who knows the woods is intent on keeping the cabin's secrets buried forever.

A desperate plea to save a dying son draws Rangers Baker and Tate into Harvest Home — a town frozen in time, sealed off from the outside world, where medicine has been replaced by rituals and children are taken for ceremonies no one dares resist. What starts as a rescue turns into a fight for survival in a town that tightens like a noose.

Burn barrels filled with human remains turn up across Texas, each sparking a new blaze — until the fires merge into a monster inferno the governor calls the worst natural disaster in state history. Ruth knows better: the wildfires are planned, the drifter who confessed is only a patsy, and the real killer is still out there.

A derailment exposes a trafficking pipeline that has been moving human cargo through the heartland for years — and another train departs in hours, carrying children who will disappear forever if it reaches its destination. Ruth boards it, and now she and Aaron are trapped on a speeding train full of killers where there are no scheduled stops, only scheduled deaths.

One ridge. One outgunned drifter. One last stand against people who do not leave witnesses.