When Del arranges a holiday in the Benidorm sun, he and Rodney are tempted to leave Grandad at home - but he soon has a change of heart and has an extra bed put in their hotel room. All's well in Spain - until the old man is arrested!

Trotters' Independent Trading Company has been forced off the market, with the continuing downpour keeping most of Peckham indoors.

While drowning their sorrows in The Nag's Head, Alex the travel agent mentions that business is slow and he can't give holidays away at the moment. As a promotional gimmick, Del suggests offering an 80% discount on a holiday to the next customer in the shop - and who happens to walk by, but Derek Trotter.

Having sold sun-hats in the rain, Rodders has managed to earn some travel cash, but he is dismayed to learn that the 80% discount only extends to a grotty hotel in Benidorm. And despite not being included in the bargain, the brothers reluctantly pay for Grandad to join them on their escape to the sun.

During the whole holiday, Del and Rodney check out the local talent, while Grandad cramps their style. Especially when they bring two girls back to their apartment, only for the old man to scare them off with his dentures.

Things get a bit more serious when Grandad gets himself arrested. Despite fearing that old history is returning to haunt him - in the form of an incident 'during the war' - it turns out that he was arrested for jay-walking and is released without charge. Much to Del's annoyance.