Pretending to be 18 instead of 16, Amara uses a dating app to find boyfriend Shane, though her mom, Diane, disapproves. Soon, Diane and Amara are being stalked and harassed. When Diane digs a little deeper into Shane’s past, she discovers that he’s every mother’s nightmare.

In a small backwater town, a trio of sadistic killers terrorizes the community as they continue a cross-country murder spree that's lasted over a year. As the police frantically begin a manhunt to stop them, the slayers encounter a mortal terror far beyond anything they could imagine. A dreadful game of survival ensues, where only the deadliest prevail.