Driving home after a day in the countryside with his wife, Katy, and their two kids, doting father Adam Parr gets cut up by a speeding silver car, nearly causing him to crash. Shocked and upset that his kids could have been killed, he pulls over. That's when he sees a struggling woman in the back seat of the silver car, her eyes pleading for help, and he knows his family are in terrible danger. In the blink of an eye, the Parrs's ordinary lives are plunged into an unimaginable nightmare. With nowhere to run and the whole family at risk, does Adam have what it takes to lead his loved ones to safety?