Senbei Norimaki finds the secret treasure named “Eye of Rainbow” of the legendary Nanaba Castle in the mountain. This treasure makes every dream come true. When the gang of Arale Norimaki and Gatchan tried to steal the treasure, Bisna, who is the descendant of Nanaba Kingdom, takes the treasure. Bisna wants to revive the devil and Nanaba Kingdom. Arale and her friends went towards the secret Nanaba Castle to get back the treasure.
DirectorHiroki Shibata
WriterAkira Toriyama
Part of
Includes: Dr. Slump and Arale-chan: Hello! Wonder Island, Dr. Slump: Hoyoyo! Space Adventure, Dr. Slump and Arale-chan: Hoyoyo! The Great Race Around The World, Dr. Slump and Arale-chan: Hoyoyo! The Treasure of Nanaba Castle, Dr. Slump and Arale-chan: Hoyoyo! City of Dreams, Mechapolis, Dr. Slump and Arale-chan: N-cha! Clear Skies Over Penguin Village, Dr. Slump and Arale-chan: N-cha! From Penguin Village with Love, Dr. Slump and Arale-chan: Hoyoyo!! Follow the Rescued Shark..., Dr. Slump and Arale-chan: N-cha!! Excited Heart of Summer Vacation, Dr. Slump: Arale's Surprise Bang, Dr. Slump: Dr. Mashirito and Abale-chan
