When a boy enters a monster's bedroom in a dream, the monster takes the boy to school with him where they both learn to make horrible faces and bloodcurdling noises.
A nice book about being open-minded and accepting of differences even when someone appears to be a 'monster.' Being a sequel some assumption has been made that you know the characters...although it is not essential. For IB PYP teachers I would suggest the student profiles of: thinker, open-minded, and the attitudes of respect, tolerance and confidence.