When Corey's school hosts a semi-truck event, he cannot believe it, but the crowd of classmates quickly leaves him feeling overwhelmed.

When Starla loses her piston Blaze and AJ have to bring it back to her, but Crusher and Pickle are also after Starla's piston and will do anything to find it first.

After a big storm is forecast for Apple Harbor, Dumpy and his friends make preparations on the farm and also help rescue a fishing boat that is standed at sea.

Little monsters and the trucks they have built attend school together in Monster Town.

"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...

Charlie, who is nervous about his first day of school, and Dumpy the Dump Truck, who is nervous about his first construction job, gradually adjust to their new settings after making new friends.

When Mrs. Barnes declares that "It's Apple Day," Dumpy wants to help and finally gets his chance once all of the apples are picked and made into pies, apple butter, and candy apples.

A little truck proves that he's tough enough to get the job done!

A construction crew explains the important jobs each of their vehicles does on the construction site.