Joe, an international hit man who follows a simple code, arrives in Bangkok for his last contract - four kills and then retirement. He hires Kong, a local street hustler, to run his errands, and he gets to work. By the second hit, Joe has started violating his four rules, losing his anonymity, leaving behind traces, and getting emotionally involved. Only one rule remains intact: don't ask questions. Can Joe regain his footing and get out alive?