After being sold at the family's yard sale, Walter is put to use blowing up balloons for a clown who is bent on robbing banks, but he escapes and becomes a hero.
When an expert on animal gas tries to cure Walter, his farts keep building up until he floats away and is blown by the wind to a distant place, where he once again proves himself a hero.
Because his farts create unpleasantness for everyone on a cruise ship, Walter the dog continues the journey in a lifeboat, but when the ship's computer crashes, causing the liner to drift, Walter again proves himself a hero.
Although confined to a hotel room after his flatuence offends the patrons of a beach resort, Walter the farting dog makes an explosive sea rescue to save little Billy and Betty.
