The Great Gambler

Jai(AmitabhBachchan)isanexpertgambler,andhasbeensoaslongashecanremember,andhasneverlostagame.TheseskillsbringhimtotheattentionoftheunderworlddonSaxena(UtpalDutt),whoisinterestedinhiringhimforwinninglargeamountsofmoneyfromrichpeopleandtheninfluencingthemintodoingwhateverhewants.Jaiagreestodoso,andplayssuccessfully,thoughunknowinglytoentrapapatrioticIndiannamedNath(JagdishRaj)whoworksforthegovernment.Afterlosinglargeamountsofmoney,heisblackmailedintorevealingtheblueprintsofatop-secretmilitarylaserweaponthathitanytargetwithin50miles.WhentheIndianpolicecometoknowofthis,theyassignthecasetoInspectorVijay,whoisaskedtoapprehendJaiatanycost.TheonlyproblemisthatInspectorVijayisJai'slook-alike,andisnotatallagoodgambler.AfterthisJaiandVijay'sprofessionalandpersonallivesgetconfusinglymixedupasJaiandVijaybothcoincidentallyare...