Farmer John's Tractor

When the rain comes that season, it doesn't let up, filling the river until it overflows, swirling and rushing and gushing. Down by the river, a car gets stuck, and the family inside shouts for help. As they climb to the roof, a series of vehicles - a speedy jeep, a strong tow truck, even a noisy fire engine - rush one by one to the scene. But each gets more stuck than the last. Is it possible that Farmer John's ancient tractor, rusty as it is, could still be up for the job?