Eglantine Bury can't find her Witchspark. But if her magic doesn't appear, her family and their magical house will fall into the terrifying clutches of the evil Whistlewitch. Across the land, Princess Victoria faces her own danger, as her secret magical powers start to spiral out of control and cause chaos in the Royal Palace. Eglantine and Victoria both turn to the disgraced witch Miss Hegotty for help. Her witch lessons are difficult and powerful, but can this secret magic match up to the dangers these two hopeful witches face?