Sid Boggle (Sid James) and his bumbling mate Bernie Lugg (Bernard Bresslaw) hit on the idea of a nudist camping holiday to spice things up with their girlfriends. But 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. Under the crooked eye of Joshua Fiddler (Peter Butterworth) the money-grabbing camping site proprietor, chaos follows confusion. There are goings-on after lights out, collapsing tents, a mix up with a mad bull, panic in the washrooms and a rude awakening from a bunch of hippies. Prepare for an onslaught of robust breezy humour when the Carry on team take to the great Outdoors.