While on a road trip to visit her boyfriend in Montana, Danielle Sullivan and her sister Grace are kidnapped by a truck driver on a remote part of the highway, setting off a chain of events that leads private detectives Cody Hoyt and Cassie Dewell to team up with Cody’s estranged wife and ex-cop, Jenny Hoyt, to search for the sisters. But when the investigators discover these are not the only girls who have disappeared in the area, it’s clear they’ve stumbled onto something much bigger than them all.

Forced to form an unlikely team, Cassie and Jenny set out to continue the search for the missing girls. Meanwhile, Danielle, Grace and Jerrie get to work on planning their escape, leading Legarski to struggle with the consequences of his actions as a distracted Ronald deals with a difficult relationship with his mother.

Still on the search for the missing girls, Cassie grows more suspicious of Legarski after a threatening conversation between the two. Meanwhile, Grace manages to make headway on the girls’ quest for freedom. Merilee pleads with Legarski to open up emotionally before it’s too late, and Helen finally confronts Ronald about his increasingly strange behavior.

Jenny and Cassie feel as if they're closing in on Legarski, but they are racing against the clock as he and Ronald are preparing to move the girls. Jerrie makes one last attempt to convince Ronald to let them go. Elsewhere, Cassie visits Merilee to question her about her husband and Ronald aggressively confronts his mother.

Jenny and Cassie officially team up to track down Ronald. Merilee struggles with the fact she didn't truly know her husband. Helen learns about her son's deeds.

Cassie grows suspicious of Max after noticing her keychain matches one found nearby the crime scene and decides to confront her. Jenny and Travis get together to talk in secret, or so they think, as Smiley’s curiosity gets the best of him, and he follows Travis to the meetup. Later, to his dismay, Travis comes face to face with Ren and Donno who are determined to get answers out of him; and Lindor pays Wolf a visit.

Cassie and Jenny discover a gruesome message meant for Dietrich in their search to find Travis, leading them to fear the worst. Elsewhere, Tonya works to gain Donno’s trust and Ren’s ear, and the kids hope to stay out of sight as they tend to Creary’s injuries. Meanwhile, Cassie has an emotional breakthrough and Ronald and Scarlet work to break out

Jenny and Cassie trade stories on recent run-ins with Tonya, leading Cassie to confront her about working for Ren. Having left the ranch—and Wolf—behind him, Ronald revels in his newfound freedom, but old habits threaten to derail his plans. Elsewhere, the kids receive advice from an unlikely source, Travis is finally honest with Jenny and, later, Cassie receives devastating news

Reeling from the emotional news of Joseph’s death, Jenny and Cassie desperately search for answers. After Bridger and Madison receive a threatening call from Ren, Max and Rachel take matters into their own hands, frantically deciding to confide in Jenny about the drugs and money. Elsewhere, Dietrich becomes hellbent on revenge following his discovery of Travis’ betrayal; and Wolf and Agatha attempt to protect Phoebe, but thanks to Ronald, all does not go according to plan