“Walter” (Cary Grant) is a bit of a rogue who is conned into helping the war effort by “Houghton” (Trevor Howard) and so takes up residence on a remote Pacific island where he is to report sightings of Japanese aircraft, shipping etc. In return, he will be given his very own island Easter egg hunt - only it will be for bottles of Scotch, instead! He’s grumpily resigned to his duty until one day hever mais...