TheCIAenlistthehelpofalow-levelagencyanalysttoinfiltrateanarmsdealtakingplaceunderthecoverofaprivate,invitation-only,martialartstournament.Bynight,theanalystmoonlightsasatopamateurMuayThaifighter,earningsomeextracashthroughcarelessbets.HismissionfromtheCIA:provideconcreteevidenceofthedealsothatthePresidentcanauthorisethetacticaluseofdeadlyforceeee　　Usinghiselitemartialartsskills,theanalystcompetesinthetournamentanduncoversthetruth.Butwhenthingsgoverywrong,he'sthelastmanstandingwhocansavetheworldfromalethal,history-changingchemicalattack.