Mary and the Witch's Flower

Mary and the Witch's Flower (メアリと魔女の花, Meari to Majo no Hana) is a 2017 Japanese anime fantasy film directed by Hiromasa Yonebayashi and produced by Studio Ponoc, based on The Little Broomstick by Mary Stewart. This is Studio Ponoc's first feature film, which premiered in Japan on July 8, 2017.

Plot
Mary follows a black cat who leads her into the woods. When she discovers a little broomstick shortly afterwards, she is astonished to feel it jump into action. Before she can gather her wits, it is whisking her over the treetops, above the clouds, and into the grounds of Endor College, where: "All Examinations Coached for by A Competent Staff of Fully-Qualified Witches."

Here she discovers evidence of a terrible experiment in transformation—deformed and mutant animals imprisoned in cages. In the moment after her broomstick takes off, she realizes that the black cat, Tib has been captured. Returning to the College the following day, she manages to free the animals, but not before the Head of the college, Miss Mumblechuuk, and her colleague, Doctor D, have seen her. Mary manages to flee...but the evil pair is in hot pursuit!