The film opens with pub landlord and frequent holidaymaker Vic Flange (Sid James) openly flirting with the sassy saucepot widow Sadie Tompkins (Barbara Windsor) as his battleaxe wife, Cora (Joan Sims), looks on with disdain. Their twitching friend Harry (Jack Douglas (actor)) arrives and lets slip that the package holiday Vic has booked to the Mediterranean island Elsbels (a pun on the slang expression "Hell's Bells") which is on the Costa Bomm, also includes Sadie, much to Cora's outrage. Cora, who avoids holidays because she hates flying, suddenly decides to accompany her boorish husband on the trip, to ensure he keeps away from Sadie.