The old dream of Acorna, a unicorn girl who was once found in the depths of space and raised by people, is coming true. She finds her homeland and her fellow tribesmen and flies away to them. However, the reality turns out to be far from being as rosy as Acorna imagined - from the very first steps on the Linyari planet, she begins to feel like a stranger in this world. And soon she again has to turn to old friends for help...