Lee and Lucy plan some New Year's Eve festivities in this Christmas special, with both inviting their parents to join them. Things soon go badly wrong as party games give way to an uncompromising round of guests pointing out what New Year's resolutions everyone needs to make - with a distinct lack of festive spirit on display.

Social niceties are stretched to snapping point when Lee and Lucy take in a package for their neighbour and inadvertently discover that it contains an embarrassing object that Lee now has to return. That proves to be easier said than done.

To celebrate their anniversary, Lee and Lucy plan a friendly night of quizzing with Toby and Anna in their local pub, but the evening is derailed when neither couple can bear to lose to their partners and the foursome splits into rival teams.

When Lee's feckless dad, Frank, announces his engagement, Lee cannot believe that any woman would want to marry him and sets out to find out exactly what is wrong with her.

When Lee joins Facebook for the first time and makes contact with an ex-girlfriend from twenty years ago, Lucy is less than pleased.

The family visit to the war graves in Normandy gets off to a bad start, and Lucy discovers that her grandfather, Wendy's father, was not the man she thought he was.