A little boy whose dreams transcend reality is sucked into his own fantasy, which is everything he has dreamed of, until he unleashes an old secret that may not only destroy this perfect dream world but reality itself.
Based on "Unico and the Kingdom of the Sun," which was newly written as a theater version, this animated film features a battle between the wizard Kukuruku and Unico. Kukuruku builds a castle using dolls transformed from men as building parts. The story revolves around the sorrow and terror of men who have been transfigured into dolls, and a girl named Cherry who wishes to recover the kindness in her brother, who is a student of Kukuruku. This work reminds us of the fact that "transformation" or "transfiguration" --- favorite themes of Tezuka Osamu --- involves not only material aspects, but also man's immaterial heart [Taken from AniDB]
Unico the Unicorn has the amazing power to make anyone he meets happy. Whether it's because of his personality or the powers of his horn, no one knows. However, the gods become jealous of Unico, thinking that only they should be able to decide or allow people to be happy. Unico is banished to the Hill of Oblivion, and the West Wind is ordered to take him there. She can't stand giving this fate to Unico, so Unico's adventures begin, as the West Wind takes him from one place and time to the next, in a neverending journey to escape the wrath of the gods.