Craig and Elise had an ideal life until their five year old son, Ben, is abducted from their own front yard while Craig watches. The desperate search for the kidnapper proves to be in vain when the child is found dead. Craig is wracked with guilt and Elise cannot forgive him. Their relationship crumbles under the strain.
Months later, a tip leads police to the suspect's door, catching him red-handed with another victim. Ben's murderer is soon brought to trial, but his parents are stunned when his sentence is considerably reduced. Utterly shocked and reunited by their outrage, they decide to seek their own retribution, hatching a plot to kidnap the man and subject him to the same monstrous acts he perpetrated against their helpless son.