On a mountainous highway in Oregon, Jessica Jules Willcox, recently widowed, begins a relocation drive that quickly becomes a tense test of nerves. A hostile Jeep driver closes in, attempts to overtake, and then speeds up, nearly colliding with a semi-trailer before tailing her and pulling away. The unsettling encounter lingers in her mind, and hours later, at a gas station, she spots the same Jeep again, a reminder that danger can follow you far from home.
After spending the night at a motel, the mood shifts from uneasy to menacing when the man Marc Menchaca materializes, awkwardly offering an apology for his earlier roadside behavior. Jessica reluctantly leaves, only to run into him once more, and this time he blocks the road, feigns injury with a sling, and asks for a ride, claiming his car has broken down. Trust is crushed in an instant, and she refuses to give him passage, driving away into the night.
A catastrophic turn comes when her trailer fishtails and a tire is suddenly slashed. The man appears again, forcing his way into her car and drugging her, leaving her unconscious in a remote cabin. She awakens to the grim reality that she’s been confined, while he presses her to recount her husband’s suicide and hints at other victims who have met similar fates.
The next morning, a fragile chance for escape presents itself. She overhears him leaving the cabin and hides, then overhears him on the phone lying to his wife about returning home soon. When he returns and begins to search, she slips away, injuring her foot in the process, and escapes into the forest. Her flight culminates in a treacherous leap into a fast-flowing river, a desperate bid for survival.
Weak but alive, Jessica stumbles upon a hunter, Robert Anthony Heald, who offers food, shoes, and a ride. They press forward, but their path is blocked by a fallen tree, trapping them for a moment in a precarious balance between safety and peril. The man reappears, now claiming that Jessica is his sister and suffering a psychotic episode after her husband’s death, a claim that unsettles the hunter enough to demand the man’s phone so he can call the police. A brutal confrontation erupts, and the man kills Robert with his hunting rifle, leaving Jessica to flee once more.
Caught in a rainstorm, Jessica seeks shelter in a cave, but the man tracks her down and shoots her in the shoulder. Bleeding and weakened, she sinks into a small pond to hide, while he stands outside, trying to coax her out before finally giving up and leaving.
By the next morning, while the killer disposes of Robert’s body, Jessica seizes her chance. She slips into the man’s Jeep, steals his phone, and hides in the trunk. A 911 call is made, followed by a violent struggle that ends with a wrecked vehicle after she strikes him with a tire iron. A search-and-rescue helicopter appears on the horizon, and Jessica makes a desperate sprint toward safety in a forest clearing, using the phone to reveal the truth about the man to his wife Kristin Carey.
The man, now identified by his own name as Sam and badly injured, pursues her into the open space. He is enraged by the call and the exposure of his deception, but Jessica turns the tables by placing the phone on speaker, laying bare his true nature for all to hear. In a final, fraught confrontation, Jessica overpowers him and stabs him fatally. As the helicopter settles toward the ground, she watches him die, a weight lifted by the narrow line between fear and relief that marks the end of a harrowing ordeal.