For the Goodman family, Friday Night Dinner is just like Sunday lunch: just take two days away, change the meal to dinner, and you’ve pretty much got it. Adam and his brother, Jonny, view Friday night dinner as a necessary annoyance - necessary because they get fed, and annoying because, well, they have to spend the evening with mum and dad.
Adam finally brings a girl home for dinner, but the evening is ruined when the family suddenly have to look after eight-year-old Katie, who has a massive girlie crush on Adam.
Dad has been secretly hiding a dead fox in the outside freezer as he wants to get it stuffed. But when Mum needs to use the freezer, Dad enlists Adam and Jonny in a desperate attempt to hide the dead animal from her.
The family is distraught when Grandma gets engaged to Mr Morris, her horrible 85-year-old boyfriend who upset everyone and lost his temper the first time he came for dinner in 2012. Dad couldn't stand him back then and hid in his shed, but will they get along this time? Meanwhile, Jim collects money for charity, while dressed in full dog costume, complete with doggy testicles.
Dad paints a portrait of Mum that resembles Margaret Thatcher, putting a damper on their anniversary celebrations, while Jonny gets a tattoo of a skull and Jim goes sleepwalking around the house - causing havoc.
Dad has bought a piano, and the world's most sarcastic piano tuner comes round to tune it. Meanwhile, the family spot Aunty Val having an affair. What should they do?