One day, Duncan is happily coloring with his crayons when a stack of postcards arrives in the mail from his former crayons, each of which has run away or been left behind, and all of which want to come home.

Toot and Puddle are best friends with very different interests, so when Toot spends the year traveling around the world, Puddle enjoys receiving his postcards.

Mrs. LaRue takes a cross-country drive with her hospitalized neighbor's cats and her own dog, Ike, who keeps the cats' owner informed of their misadventures through a series of postcards.