Gavin starts his new job in Cardiff, while Smithy tries to adjust to life without him.

Stacey interviews for a new job while ensuring that Gavin sticks to his recent promise, and Dave is not a happy bunny when Nessa tells him she is taking baby Neil to Essex to see his dad.

Pam and Mick are having second thoughts about the conservatory; Bryn is in his element as he awaits the arrival of his houseguests: all the Essex boys down for a big night out in Cardiff.

Pete and Dawn are ready for a fresh start and decide to renew their vows, although Pete's ring threatens to ruin the big day. Meanwhile, Gavin and Stacey receive some awful news.

Pam and Mick unexpectedly arrive in Barry, and everyone, including Smithy and Doris, decides to spend the sunny day on the beach. But there are two questions on everyone's mind: will Dave be there? And, is Gavin really OK?

The wedding day of Nessa and Dave Coaches has dawned, and everyone is looking forward to the big event--except for Smithy, who faces a dilemma.