In a completely wordless story, a young girl with a red crayon draws a door in her bedroom wall and opens it onto a fantastical world. Her first stop is a magical forest with a stream running through it. The girl draws a boat with her crayon to see where the stream will take her and she arrives in an elaborate walled city. And here is where the danger begins. Each new setting she travels to offers some sort of challenge, which she faces with her wit and her magical red crayon. Halfway through, the rescue of an exotic purple bird also becomes part of her mission. Lushly detailed illustrations provide a lot for the eye to explore, and young readers will want to follow the adventure to see where she goes and how she cleverly escapes danger each time. In what may be an homage to Crockett Johnson, in the end she returns the bird to a boy with a purple crayon, and the three of them set off on a bicycle with one red wheel and one purple wheel. (Ages 4-8)