Kath & Kim follows the day-to-day Australian suburban life of Kath Day-Knight (Jane Turner), her only child Kim Craig née Day (Gina Riley), Kim's husband Brett Craig (Peter Rowsthorn), Kath's love interest and eventual husband "purveyor of fine meats" Kel Knight (Glenn Robbins), and long-time family friend Sharon Strzelecki (Magda Szubanski).
The main setting is Kath's townhouse in Fountain Lakes. It is taped in a house in the waterfront street of Lagoon Place, Patterson Lakes, Victoria.
