Having been run out of Boneville, Phoney Bone arrives in Barrelhaven looking to make some extra dough. Unfortunately the people of Barrelhaven tend to bet with commodities other than cash.
It takes the sharp mind of Lucius to see through Phoney's plot and unmask Smiley Bone as the 'brains' behind the mystery cow. Lucius bets his inn on Gran'ma Ben to win.
Just when you think you know what the outcome will be, the stampeding cattle, Gran'ma Ben and the Mystery Cow run into a rampaging horde of Rat Creatures.
Hilarity ensues, but who will win the race?