"Lighthearted verse portrays a world where train stations are classrooms, the conductor doubles as the teacher, and Boxcar is happy to hand out tissues to anyone who ah-choo-choos"--OCLC.
When the Tooth Fairy is too tired to deliver a prize to a little girl with a wiggly tooth, Uni the unicorn is ready to help and, with a little magic, makes sure the little girl has something special to wake up to.