When a pretty niece of Trigger's arrives in the Nag's Head, Del and Rodney indulge in a little sibling rivalry in an effort to win her fair hand. One of them, however, ends up doing a spot of unscheduled hang-gliding.

Trigger's young niece, Lisa, is staying with him for a while, and the scruffy young girl that Del and Rodney remember has now become a stunning 25 year-old woman.

Both Trotter brothers think they are in with a chance, and immediately begin competing for Lisa's affections. Despite almost coming to blows, Del and Rodney manage to invite Lisa round to the flat for tea, and she seems more than happy to accept.

In preparation for their date with Lisa, Del goes out to get some more 'Smash' and Rodney spends half-an-hour on the sunbed. Just before Del leaves for the shops, he notices Rodney has dozed off and whacks up the heat on the bed.

Much to Rodney's annoyance, he spends most of the evening nursing his bright red face, which has burnt under the ultra-violet rays, whilst Del and Lisa seem to be getting on really well. To exact his revenge, Rodders picks up on Lisa's mention of a hang-gliding trip, and as a surprise for his 46th birthday, he arranges for Del to have a go.

After offering to give her a lift back home to Winchester, Del and Rodney head off to meet Lisa's friends in a large hillside field. Not wanting to loose face, Del reluctantly agrees to try it out, and after launching himself into the air, he disappears for over 12 hours.

Eventually Del arrives back at the flat, having been hospitalised after crashing into a television transmitter in Redhill. It's only at this point that he and Rodney hear that Lisa is already engaged!