After eight years in a Nevada prison, former heavyweight boxing champion Duke Kilroy returns home to London, intent on avenging his brother's death.

Duke must improvise to keep his mission on track, but he finds that success comes at a cost.

Turning up the heat on the Marshalls, Duke is drawn in deeper than he ever could have imagined.

London's gangland is pushed to the brink of war. But for Duke, the consequences strike painfully close to home.

A deadly rescue mission opens up new possibilities for Duke, until an almighty twist causes his overwhelming need for revenge to eclipse him once more.

Duke prepares for his long-awaited shot at revenge, while others take matters into their own hands.

With time running out and relationships breaking apart, Duke closes in on his target. But an unexpected countermove leaves him staring down the barrel of defeat.