Nory Horace is nine years old. She's resourceful, she's brave, she likes peanut butter cookies. Also, she's able to transform into many different animals. Unfortunately, Nory's shape-shifting talent is a bit wonky. And when she flunks out of her own father's magic academy, Nory's forced to enter public school, where she meets a group of kids whose magic is, well, different.

Once again Abby and her brother Jonah go through the magic mirror in their basement, and this time they find themselves interfering in the Little Mermaid story -- and needing to set things right and make sure everyone has a happy ending.