Harold goes for an adventurous walk in the moonlight with his purple crayon.

Harold needs a picture for his bedroom wall so he creates one with his one purple crayon.

Harold and his purple crayon visit space.

Two children find themselves in a story when they write words in the sand on the beach, and whatever they have written appears when the waves wash the words away.

Despite everyone's dire predictions, a little boy has faith in the carrot seed he plants.

Harold wants to take a walk in the moonlight, so he draws a moon with his purple crayon. Next Harold wants a picture for his room, soon he's bigger than a mountain. Then with his crayon, Harold takes a trip through the enchanted garden where he meets a King, a giant witch, and a fairy with one magic wish.