An unsuspecting family of four is joined by seven successive sets of animals (seals, geese, rabbits, monkeys, vipers, sheep, and skunks) on their bus ride to a local fair. So instead of swishing with the wipers or beeping with the horn, children "hiss" with the vipers and "honk" with the geese, and the bus driver, who happens to be a tiger, goes "ROAR, ROAR, ROAR."