The first four episodes of the rebooted CBBC series based on the children's books by Jill Murphy. Ordinary schoolgirl Mildred Hubble (Bella Ramsey)'s life is changed forever when Maud Spellbody (Meibh Campbell) comes crashing into her home and tells her about Cackle Academy, a school for budding young witches. Intrigued by what she hears, Mildred joins her new friend at the school's selection day and takes the entrance exam with hopes of getting accepted, despite her non-magical background. The episodes are: 'Selection Day: Part 1', 'Selection Day: Part 2', 'Tabby' and 'New Girl'.