Summary

Mildred Hubble, the worst witch in Miss Cackle's Academy for Witches, can't bear to leave behind her beloved cat, Tabby, when the class goes for a week beside the seaside.

Mildred Hubble, the worst witch in Miss Cackle's Academy for Witches, can't bear to leave behind her beloved cat, Tabby, when the class goes for a week beside the seaside. But keeping Tabby leads Mildred into yet more trouble.