Please answer the following question: Build a movie plot around this: Who are the only occupants of the castle? Haggard, his adopted son Prince L_r and four ancient men-at-arms.
A:
In an enchanted forest, a talking unicorn learns she is the very last of her kind. A butterfly reveals that a demonic animal called the Red Bull herded her kind to the ends of the earth. Venturing into unfamiliar territory beyond the safety of her home, the Unicorn journeys to find them and bring them all back.Upon her journey the Unicorn is captured by the evil witch Mommy Fortuna, and is put on display in Mommy Fortuna's Midnight Carnival. As most of the attractions are normal animals with a spell of illusion placed on them (to wit, a toothless lion for a Manticore, a crippled chimpanzee for a Satyr, and a mere snake for the "Midgard Serpent"), Fortuna uses a spell to create another horn on the unicorn's head that the non-magical carnival visitors can see, as they are unable to see her real form. Fortuna keeps the immortal harpy Celaeno captive as well and acknowledges the dangers of caging such a monster, but deems the risk secondary to the deed's recognition and prestige. While held captive, the unicorn is befriended by Schmendrick, an incompetent magician in the service of Mommy Fortuna. With the help of Schmendrick, the Unicorn escapes, in the process freeing Celaeno, who kills Fortuna and her henchman Ruhk. The Unicorn and Schmendrick later gain a second traveling companion Molly Grue, the careworn lover of Captain Cully (the disappointing "reality" behind the Robin Hood legend).When the Unicorn nears the seaside castle of King Haggard, supposed keeper of the Red Bull, she encounters the animal, which turns out to be a monstrous fire elemental. At the last moment before her capture, Schmendrick uses his unpredictable magic, and transforms her into a human woman with white knee-length hair. In this guise, the Red Bull is uninterested in her and departs. The Unicorn suffers tremendous shock at the feeling of mortality in her body. While Molly wraps the Unicorn's human form in a blanket, Schmendrick states that the magic, not he, chose the form, and promises that he will return her to normal after the...