Welcome to deepest darkest Chiswick, and the very average terraced home of the Porter family.

Ben, a plumber, lives with his wife, Bill, and their two children, Jenny and David. Whilst struggling to keep on top of the rest of the family's woes, Bill runs a small catering business with her man-hungry best friend and neighbour, Rona.

On the surface, they're a very average family unit, complete with 2.4 children - the .4 in the guise of fun-loving Ben - but behind the unexceptional facade, the Porters and their friends find themselves caught in a never-ending string of bizarre situations and peculiar dilemmas. It seems that bad luck, strange occurrences and poor judgement all conspire to turn the Porters' world topsy-turvy!