The series stars Julia Ormond as lead character Joanna Beauchamp, a witch and mother of Freya Beauchamp (Jenna Dewan Tatum) and Ingrid Beauchamp (Rachel Boston), who are part of the next generation of witches. Mädchen Amick co-stars as Joanna's mischievous witch sister Wendy Beauchamp. The series is loosely based on the book of the same name's plot, with one change being that Freya and Ingrid are unaware of their magical powers.