"When their dad forgets his lunch box on his way to the construction site, a young brother and sister set out to take it to him, and along their way witness all the noisy, exciting action of a build site in the city."--Publisher's description.

When Mike Mulligan and his steam shovel, Mary Anne, lose their jobs to the gasoline, electric, and diesel motor shovels, they find a new opportunity in a very surprising place.

After saying goodbye to her loving family, a hard-working mother cat heads to her job at a construction site.