Gavin is an ordinary boy from England, Stacey is an ordinary girl from Wales. The two are obsessed with each other, yet they’ve only ever spoken on the phone. They decide to make the journey to meet, but the peculiar personalities of their families and friends make it a rocky road to happiness. Their loved ones must learn to get along as their worlds collide and the relationship gets serious. Fortunately, their best friends - Nessa and Smithy - get along “exceptionally” well - they just have to be drunk first.