Joe is a young boy who lives with his mother, Joanna, in working-class London. The two reside above the tailor shop of Mr. Kandinsky, who likes to tell Joe stories. When Kandinsky informs Joe that a unicorn can grant wishes, the hopeful lad ends up buying a baby goat with one tiny horn, believing it to be a real unicorn. Undaunted by his rough surroundings, Joe sets about to prove that wishes can come true.
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