In the wake of his wife's mysterious disappearance, Nash Preston tries to hold his family together. As the Alaska summer heats up, he ignores his expired visa, sending immigration bounty hunters after him. He flees for the border with his sons. Their already fraught journey takes an alarming turn when his youngest, Robbie, picks up a mysterious fossil that makes him sick. When his boys are snatched and taken to a sinister detention facility, he must find a way to save them.