The protagonist, Ace, is a ruthless and decisive mob boss who has firmly established his position at the top of London's underworld. However, during an ambush orchestrated by his archenemy, Jack, a young stranger named Max unexpectedly steps in to save him. This act of bravery sparks Ace's interest and earns his trust. Ace brings Max into his inner circle, seeing him as a valuable ally and even hiring him as his personal bodyguard.