John Logan, a British Army Sergeant, takes leave from Afghanistan and returns to London to free his sister and her daughter from the control of psychotic Serbian gangster, Miroslav Nikolic. But no plan survives contact with the enemy, and Logan should have known better. Becoming both predator and prey on the gritty streets of London, the boundaries of loyalty and friendship become blurred as Logan is drawn into the dark and shadowy world of spooks, drug traffickers and gunrunners, where nothing is what it seems and trust walks hand in hand with ultimate betrayal.