DavidChiangplaysCaptainAi,aprovincialconstableassignedtothetaskofapprehendingagun-runningoutlawnamedChanandfindingthehiddenstashofweapons.TheCaptainreliesonthreeallies:hisloyalpartner,hisfiancee,andaretiredkungfumaster(SimonYuen)whohappenstobehisfiancee'sfather.However,hemustalsocontendwithcorruptstaffmembersandalocalkungfuteacherworkingwiththeoutlaws.AfterarrestingChan,CaptainAimustholdhimprisoneruntiltheCommissionerreturnstotown.ThingsgetharderafterthehostileDeputyCommissionerappointsamanincahootswiththeoutlawsasCaptainAi'ssuperior.