Cousin Julie is getting married. However, trouble comes when "Executive bridesmaid" Karen asks her troubling questions about her previous boyfriends, and Ben asks the vicar complex theological questions involving the baby Jesus and lasers.
Karen mourns the death of a mouse killed by her parents while also getting into the habit of swearing, Ben uses some devious tactics when he stands for election as class rep and Jake causes Sue to worry when he brings home a girl for tea. Meanwhile, Pete and Sue have to worry about money, chest pains, a friend is using them as a glorified babysitting service and the the superior mother next door.
Sue and Pete ban TV as they attempt to have a traditonal family Sunday playing games like hide-and-seek, Pelmanism and scissors, paper, velociraptor, but matters are complicated when Grandad comes to stay after he suffers an accident involving a tin of baked beans. Later, Pete worries about teaching sex education, Karen plays the recorder, and Ben's headmaster suggests that he should take a few days off school.
Pete and Sue find themselves in every parent's ultimate nightmare - trapped in a foreign airport with three bored young children (and an increasingly bewildered Grandad).
A Croatian babysitter has a night to remember when Mum and Dad manage to escape for a meal together.
Ben finds himself in trouble with a football referee whilst Karen tries to find out where Satan lives. Mum finds it impossible to compete with the prefect mother who lives next door.
It is a bad night for the Freeman family when Ben is taken to casualty after yet another accident. Karen writes a letter to the Prime Minister asking him to sack her teacher at school. The evening gets worse when a thunder storm hits the area. The evening finishes off with a visit from the police.