In a secret world above the clouds lives a little unicorn with a bright, sparkling horn, called Lunicorn. There is just one rule in this special unicorn world: never let yourself be seen by the humans who live below. Unicorn magic is secret! But one night, Lunicorn hears the cries of a little girl who is scared of the dark. With her brightly glowing horn, Lunicorn knows she can help by lending a light. But can she persuade her unicorn friends that her special gift is meant to be shared?