Mister Blot's Academy (1984)

Thanks to the powers of magic, Adaś Niezgódka is transported to the fairy tale land of Mr. Blot – the protagonist of Jan Brzechwa’s classic book. Mr. Blot is a teacher and a magician in one. His lessons cannot be boring. Especially when bIotology is the subject. Adaś learns about the miracles of the enchanted land, but also gets to know its dark secrets.

Unfortunately the movie Mister Blot's Academy is not yet available on HBO Max.