Jenna notices her husband Cole's behavior. She hears a woman's voice, sees Cole with a woman in the cargo bay. Suspecting cheating, Jenna calls the police, but they find only a silicone doll. Jenna smashes a hidden compartment, finding her 'dead' mother-in-law, terminally ill. Ashamed, the mother-in-law asked Cole to lie about her death. Cole secretly cared for her in the truck. Jenna understands. The family returns home to spend final moments with the elderly woman.