Private detectives Cassie Dewell (Kylie Bunbury) and Cody Hoyt (Ryan Phillippe) join forces with his estranged wife and ex-cop, Jenny Hoyt (Katheryn Winnick), to search for two sisters who have been kidnapped by a truck driver on a remote highway in Montana. But when they discover that these are not the only girls who have disappeared in the area, they must race against the clock to stop the killer before another woman is taken.