ReverendJohnBurnside,AmericanmissionaryintheFarEast,preparestoreturnhomeaftertwentyyearstotakeupthefightagainstCommunism.TheRedsimprisonhimandsendinhisplaceaspywhoishisdouble,butwhoisinstructedtocomeoutforCommunism.ThespyisacceptedinBurnside'shometown,andhereportstolocalCommunistheadquarters,whereJamesJohn,prominentlocalbusinessmanbutinrealityaRedagent,hasinstructionstoassisthiminalldetailsofhismission.Hedoesaseriesofpersonalappearancesandradiointerviewsandtalkshows,usingananti-Communistapproach.Meanwhile,heisgettingthechancetoseehowAmericanslive,andthepartthatreligionplaysintheirlives,andthereisalsoaslightromancebetweenhimandBurnside'sformersweetheart,LouiseCannon,whothinksheisthemansheknewtwenty-yearspreviously.