When September embarks on a new adventure, she is spirited away to the moon, reunited with her friends, and finds herself faced with saving Fairyland from a powerful moon-Yeti.
Disaster-prone Mildred Hubble finds that despite her best efforts she still manages to get into trouble at Miss Cackle's Academy for Witches, especially after she is put in charge of the new girl, the seemingly placid Enid Nightshade.
Mildred Hubble's first term at Miss Cackle's Academy for Witches starts badly when, unlike her classmates, she can't control her broom, her kitten, or her spells.