On Thanksgiving, Keller Dover, his wife Grace, their teenage son Ralph and their little daughter Anna go to the home of their neighbors and friends Franklin Birch, his wife Nancy, their teenage daughter Eliza and their little daughter Joy to celebrate together in a lunch party. Anna and Joy want to play on the street and Ralph stays with them. The girls play in a ROV and Ralph brings them back home. Later Anna asks her father to go to their house with Joy to seek her emergency whistle and Keller tells her to call Ralph or Eliza to go with them. Later the families realize that the girls went alone and have vanished, and they call the police department. Detective Loki is assigned to the case and he arrests the teenager Alex Jones that drives the trailer. Soon they learn that Alex has the IQ of a ten year-old boy and he is discharged. When he is leaving the precinct with his aunt Holly Jones, Keller presses Alex and he says to Keller that "the girls have not cried when he left them". Keller asks to keep Alex imprisoned during the investigations, but Loki cannot hold him anymore. While Detective Loki investigates the pedophiles near the location, Keller decides to abduct Alex to torture him and find where his beloved daughter and her friend are, crossing the thin line between right and wrong.—Claudio Carvalho, Rio de Janeiro, Brazil