A very clumsy man and his UFO-obsessed girlfriend discover a plan made by his boss to market eggs laced with nicotine.

Mavis Davis has had enough! Younger son Eddie wears headphones all day and almost electrocutes her. Older boy Wally is gay and lives in a huge over-ripe banana. And her husband Roly has grown into a blind, motionless, emotionless vegetable. So pack the bags, Mavis is off on an around the world package trip leaving them all behind. However, when Dad finds out she has been joined by their hated next door neighbour long dead passions begin to stir. Blind, senile old Dad decides to chase his wife around the world...

An eccentric marketing guru visits a Coca-Cola subsidiary in Australia to try and increase market penetration. He finds zero penetration in a valley owned by an old man who makes his own soft drinks, and visits the valley to see why. After "the Kid's" persistence is tested he's given a tour of the man's plant, and they begin talking of a joint venture. Things get more complicated when the Coca-Cola man begins falling in love with his temporary secretary, who seems to have connections to the valley.