Keller Dover (Hugh Jackman) is facing a parent's worst nightmare: His young daughter and her friend are missing, and panic has set in for both families as hours turn to days. Heading the investigation, Detective Loki (Jake Gyllenhaal) arrests the only suspect - the driver of a dilapidated RV on which the girls had been playing - but a lack of evidence forces his release. As pressure mounts, Loki's team pursues multiple leads while a frantic Dover decides he has no choice but to take matters into his own hands.