SidneyBristowisacollegestudentwhohasanunusualjob–sheisaspyworkingfortheCIAundersecretconditionswherenotevenherfriendsknowswhatshedoes.WhenherboyfriendproposesSydneytellshimwhatshedoesforalivingandheremployerskillhiminlinewithprocedures.DecidingtoleavetheagencybeforetheykillhertooSydneydiscoversthatshehasactuallybeenworkingforSD6,anagencythatisactuallyashadowycriminalorganisationworld-wide.SydneyjoinstheCIAandworksasadoubleagenttohelpCIAAgentVaughntobringdownSD6.ShefindsthatherfatheristheotherdoubleagentwithinSD6andthepairworktogether.WhilefollowinghermissionstouncovertheworkofthepropheticRambaldishemustfeedinformationbacktotheCIAwithoutblowinghercover.