Little Nemo: Adventures in Slumberland [1989]

Little Nemo: Adventures in Slumberland (released in Japan as simply Nemo (ニモ, Nimo) and credited in some territories as Little Nemo) is a 1989 animated musical fantasy film directed by Masami Hata and William Hurtz. Based on the comic strip Little Nemo in Slumberland by Winsor McCay, the film went through a lengthy development process with a number of screenwriters. Ultimately, the screenplay was credited to Chris Columbus and Richard Outten; the storyline and art style differed from the original version. The original soundtrack was penned by the Academy Award-winning Sherman Brothers. The film features the English dub voices of Gabriel Damon, Mickey Rooney, René Auberjonois, Danny Mann, and Bernard Erhard.

Each night, young Nemo goes to Slumberland and has adventures and befriends the king of Slumberland, Morpheus. But one night Nemo discovers Nightmare Land, and the evil nightmare king, throwing Slumberland and Nemo himself into danger.