Katy, a red crawler tractor, belonged to the Highway Department of the City of Geoppolis. She was not used in winter, however, until a huge snow storm snowed in the whole city. Then Katy plowed out everyone.

"Walt and his driver Gus are plowing a parking lot when they come upon a stray puppy and decide to help him get inside where it's warm and find a home"--

On the Mighty Mountain Road Crew, the trucks come in one size: BIG. That is, until the little snowplow joins the crew. None of the other trucks think that the little snowplow can handle the big storms, but he knows that he can do it--and just to be sure, he trains hard, pushing loads of gravel, pulling blocks of concrete, and doing plow lifts to get ready. But when a blizzard arrives, will the little snowplow's training be enough to clear the streets...

"The little snowplow loves his job on the Mighty Mountain Road Crew, but the work he loves best is plowing snow. Throughout the year, he wishes for snow to come, but winter begins without a single flake in sight. As the weeks pass and the little snowplow's birthday approaches, he starts to wonder whether it will snow at all. Will the little snowplow's birthday dreams come true?"--Amazon.com.

An unexpected snowfall means a no-school, no-rules day.

Small Walt is the smallest snow plow in the fleet and he always gets picked last, but when there is a big snowstorm in the city, he will have the chance to prove his worth.