It's Tommy's last day at Pa's farm and it's time to say goodbye. Tommy doesn't want to go. Not yet. He loves the farm and its playful pigs and clucking chickens and galloping goats and the dam that is deep and blue and perfect for skimming stones. And he loves Pa.

But Pa has a plan: there's time for one last run on the Wheelbarrow Express. Toot! Toot! All aboard!