In a distant place, there is a beautiful bird kingdom, but soon its tranquility is shattered by a mutiny of the opposition, and Ugly Duckling's parents mysteriously disappear to protect the Lurid Bird. In order to unlock the secret of the glazed bird and find his parents, Ugly Duckling and his best friend Ugly Little Eight embark on a journey to find the old cat mage, unaware of the danger that is sneaking up on them. In order to prevent the war from expanding further, Ugly Duckling, who is carrying a big secret, resolutely climbs the glazed tower….