A year has passed since Darren (Robert Sheehan) was shot as he tried to walk away from gangland. Now tortured by nightmares he is forced to turn to crime kingpin John-Boy Power (Aidan Gillen) for help once more. John-Boy's own plans to get out of the business and retire to Spain are wrecked when two consignments of drugs are seized by the cops, sparking all-out war with a rival gang. Haunted by the death of his brother and out of control on the cocaine that he sells, John-Boy spirals into violence and madness - and as the gang war escalates, Darren's debt is called in. But is he really ready to take a human life?