The Worst Witch S02 E13 The Millennium Bug

"Mildred Hubble spells trouble."

The girls are very excited because it's the thousandth birthday of the Castle! Miss Bat is preparing a performance of the Spell girls with Fenella, Griselda, Sybil and Clarice. While Mildred is elbowed out of her drama slot by Ethel! Meanwhile the girls are shocked to find that Ethel's father & the Chair of the School, is planning to sell the Castle!