When Thomas the Tank Engine decides not to make his usual station stops one day, he learns that faster is not always better.

Traveling along the rails with his engine buddy, Huff, a little caboose named Puff clicks and clacks endlessly until the day that the friends decide to switch places, with unexpected results.

A little blue engine comes to the rescue of a train that is loaded with toys, dolls, and good things to eat, but cannot get over the mountains to deliver the cargo to waiting children.