The 肢藝術CIA enlist the help of a low-level agency analyst to infiltrate an arms deal taking place under the cover of a private, invitation-only, martial arts tournament. By night, the analyst moonlights as a top amateur Muay Thai fighter, earning some extra cash through careless bets. His mission from the CIA: provide concrete evidence of the deal so that the President can authorise the tactical use of deadly force.　　Using his elite martial arts skills, the analyst competes in the tournament and uncovers the truth. But when things go very wrong, he's the last man standing who can save the world from a lethal, history-changing chemical attack.