Amotley crew of British characters ride The San Ferry Ann to the shores of France where they embark on a weekend of calamity. A compervan family led by Dad and Mum (David Lodge and Joan Sims) create chaos from the moment they set their tyres on the shore resulting in frequent run-ins with the Gendarme. Lewd Granddad (Wilfred Brambell) finds his own misadventures with a newly acquainted friend. A crazy German ex-soldier (Ron Moody). Also aboard for the ride is a saucy hitchhiker (Barbara Windsor), who causes a few heads to turn including that of a fellow traveller (Ronnie Stevens) who pursues her affection with comic results..