Gavin and Stacey have been talking on the phone for several months whilst they are at work but they have yet to ever meet in person. They arrange to meet up for the first time in London.
After arguing with Gavin on the telephone Stacey believes that he doesn't want to know her anymore. After Gavin drives to Wales to try and sort things out he ends up taking Stacey home.
Gavin and Stacey have to tell their respective families about their engagement. A party is thrown for them in Billericay.
Gavin's family head to Wales to discuss the wedding plans with Stacey's mother and visit a wedding fair. Stacey learns a secret from Nessa.
Stacey and Gavin both get ready for their respective hen and stag nights. Gavin ends up having two stag nights and during the second one he learns something about Stacey which could put the impending marriage in doubt.
It's the day of the wedding but will will the bride and groom show up at the church. Nessa is forced to make a difficult decision.
The West and Shipman families enjoy Christmas together in Essex. Gavin and Stacey make an important announcement that they are moving to Wales which causes friction. Smithy feels pushed out of his son's life and feels even worse after Vanessa becomes engaged. After talking to Gavin, Smithy tries to convince Vanessa not to get married.
A behind the scenes look at the making of the Christmas episode.
Stacey and Gavin return home to Eseex following their honeymoon.
When Smithy learns that he is the father of the child that Nessa is expecting he leaves town.
Stacey finds Essex life not as exciting as she was expecting. Stacey's mod improved when she gets the chance to go to Barry at the weekend. Nessa and Smithy see the first scan of the baby.
Nessa's hidden talent for bowling is revealed. Mick finds himself becoming a minor celebrity.
Bryn arranges a special surprise from Gwen's birthday. Stacey tells Gavin a major decision that she has made.
Gavin seeks counselling for his marriage troubles from Smithy, but Smithy's idea of relationship therapy is to organise a surprise lads night out at a nightclub foam party. While the lads are knee deep in foam, Stacey is with her family at a bingo night.
Stacey returns back home to Essex in an attempt to try and sort things out with Gavin. Nessa goes in to labour and the young couple race to find Smithy and get to the hospital.
Stacey is happy to be living back in Barry as Gavin starts his new job in Cardiff. Smithy tries to adjust life without Gavin back in Essex. Everyone is reunited when the baby is christened.
Stacey makes sure that Gavin stick to the promise he made her as she looks for a new job. When Vanessa makes plans to take the baby to see Smithy in Essex, Dave isn't happy.
Pam and Mick talk about their new conservatory. Brn looking forward to everyone staying over at his place when a night out in Cardiff is organised for the boys. Smithy is worried about seeing Nessa again after what happened last time. Stacey isn't sure whether she tell Gavin after making a worrying discovery.
Gavin isn't happy with his in laws knowing everything about his and Stacey's sex life. Pete and Dawn get ready to renew their wedding vows in Billercay and everyone heads off to be there.
Those in Essex decide to head for the beach and enjoy their Bank Holiday Monday. Gavin has a heart to heart with his father. Nessa and Smithy are caught by Dave enjoying a good time together.
Nessa and Dave's wedding day approaches.Gavin hears some life changing news from his wife.Bryn and Jason finally deal with their secret. Smithy wishes Nessa all the best as she prepares to get married. Smithy comes to a realisation and races to the church before it is too late.