The adventures of Joanna Beauchamp and her two adult daughters Freya and Ingrid -- both of whom unknowingly are their family's next generation of witches -- who lead seemingly quiet, uneventful modern day lives in Long Island's secluded seaside town of East Haven. When Freya becomes engaged to a young, wealthy newcomer, a series of events forces Joanna to admit to her daughters they are, in fact, powerful and immortal witches.

Inspired by the popular Harry Potter book and movie series, the show presents a trio of "wizards-in-training" at an enchanted private school run by Miss Crystalgazer. Cassy is a junior witch, Gus is a half-elf/half-human junior wizard, and Verne is a promising "mortie", i.e. a non-magical human. With the guidance of the talking Ultimate Book of Spells (aka UBOS), the three have to battle the evil wizard Zarlak, who's trying to steal all of the world's spells.