It's Ringo and Babs's wedding - in deepest Wales! Erin is still in hiding, but on discovering her whereabouts, Vinnie uses the road trip as an excuse to go and get her. He also gets roped into helping Bride-to-be Babs bag a final extra-marital fling. As the gang set off on their road trip, it's soon clear that if things can go wrong, they most certainly will. A car crash, a tense encounter with the MacDonagh brothers, and a dinner of roadkill with a creepy farmer keep one half of the gang busy.

Meanwhile the other half travel in Tommo's newly converted mobile sex dungeon attempting to babysit an out-of-control Babs...