On her eighteenth birthday, Amily eagerly prepares to celebrate with her mother, Julia. As she heads out, her attention is drawn to Nancy, a woman calling for help from a car. Unsuspecting, Amily is abducted by Nancy and Robert and locked in a basement. When Julia cannot reach her daughter, she senses something is wrong and rushes to the small town of Ronnie to seek help from Pastor Davis. Unbeknownst to her, Davis and Nancy are accomplices. They pretend to help while doing everything they can to conceal Amily’s captivity. Julia notices that a masked girl called Lucy has a build similar to her daughter’s and begins to suspect she is Amily. During repeated confrontations, Robert and Nancy invent stories and use their neighbors to deflect suspicion. Davis also interferes, obstructing Julia’s search and leading to further clashes. At one point, Julia even begins to doubt her own judgment. As Davis, Nancy, and their accomplices deliberately conceal the truth, Julia comes agonizingly close to finding her daughter, only to miss her time and again. Finally, Amily breaks free of her restraints, escapes her captors, and is reunited with Julia.
