When Mike Mulligan and his steam shovel, Mary Ann, lose their jobs to the gasoline, electric, and diesel motor shovels, they go to a little country town where they find that one new job leads to another.

Meet Brian, the invisible boy. Nobody ever seems to notice him or think to include him in their group, game, or birthday party ... until, that is, a new kid comes to class. When Justin, the new boy, arrives, Brian is the first to make him feel welcome. And when Brian and Justin team up to work on a class project together, Brian finds a way to shine.