Sid Boggle (Sid James) and his reluctant mate Bernie Lugg (Bernard Bresslaw) hit on the idea of a nudist camping holiday to spice things up with their girlfriends! But there is just one small problem... how can they persuade the girls to spend their holiday naked? For Sid the fun really starts when Dr. Soaper (Kenneth Williams), headmaster of the Chayste Place Finishing School and his matron, Miss Haggard (Hattie Jacques) arrive with a gaggle of nubile girls. Star pupil Babs (Barbara Windsor) catches Sid's eye and sets the scene for one of the most delightful frolics in the Carry On repertoire.