Kath Day is enjoying life as an empty nester until her recently married daughter Kim moves back in. To Kim's disgust, Kath has a lover and they're going for it like rabbits. Kath has a feeling in her waters that Kel is about to make their sensual relationship a mere formality. Kim enlists Sharon's help to stalk her estranged husband Brett, with disastrous results.
Brett's relationship with a 75kg Rottweiler by the name of Cujo has Kim's nose out of joint. She's out to sow her rolled oats and, with encouragement from Sharon, they go speed dating at the local pub. Meanwhile Kath is concerned that there is a dark secret at the heart of Kim and Brett's separation, one that even threatens her future with Kel.
Wedding preparations for Kath and Kel's big day are well underway. Kel puts his skills as a fine purveyor of meat to the test as he begins to design a commemorative sausage for the connubials. The future of the Sharon's netball team and three generations of family history are at stake when players drop out at the last minute. Can Kim drag her manicured nails off the couch to help her second best friend in need?
Kath's wedding plans are thrown into chaos when she discovers that Kim has really stacked on the weight and doesn't fit into her bridesmaid's dress. Sharon discovers self-help and motivational books and considers marriage counselling as a career. Her reading is soon put to the test as a complete breakdown of all relationships erupts. A round table counselling session produces startling revelations, but talk to the face cos the hand ain't listening!
Kath's flat out organising the wedding and the stress is starting to show. Comments about her looks are making her worry that Kel is losing interest. When Kel stands Kath up one too many times, Kath is determined to move on without him. Meanwhile Brett's in the freezer while Kim plays ice maiden. Treat 'em mean, keep 'em keen is Kim's motto but Sharon puts an ice pick in the works.
Kath is scrimping and saving money to pay for the ritziest fairytale-style wedding on her own. After gambling and competitions fail to raise the much-needed cash, Kath organises a lingerie party with Kim and Sharon modelling the merchandise and serving hot suggestions. Kim discovers something she's really good at, internet chat rooms and online shopping with Kath's credit card. With the help of a modem, Kim is determined to meet the man of her dreams. Beware the lace snap crotch teddy!
With their fascinators on and Fleur De Lys Picolos in hand, Kath and Kim hit the races. They mingle with celebrities (C-list), while Sharon gets lucky with a very little racing identity. Brett has a reality check when he babysits lil' Eps. Meanwhile, Kel is up to his eyeballs in lamb flaps and honey soy drumettes.
Look at moi! Look at moi! Look at Kylie! International pop icon Kylie Minogue makes a special guest appearance at Lagoon Court. Meanwhile, what is to become of Kath and Kel, after Dr Ng tells them to go fat free? Kim and Brett are at loggerheads over Epponnee's career projectory. The clock ticks loudest for Sharon as she waits in the wings like a white ant.
Epponnee-Raelene Kathleen Darlene Charlene Craig is turning one so it’s party time at Lagoon Court. Kim is sparing no expense to make sure Epponnees party is going to blow everyone out of the water. Kel has some celebrating to do as winner of a prestigious award. Guest starring Eric Bana and Rob Sitch.
Sharon's always been unlucky in love, until now that is, Kath and Kim go into planning mode for the event of the century! Brett gets the job of a lifetime and finds a perfect new place to live with Kim and Epps. With the house to themselves Kath and Kel embark on a new business venture and being people's, people there is no way they cannot fail. Looks like it's all going to end happily for everyone...Or is it?