Yona, born into a ducal family, was bedridden due to her overwhelming magical power slowly eating away at her body. One day, she comes across a mysterious book — one that contains all of ancient magic. Among its pages, she discovers a spell: magic to control objects. “If I can master this… maybe I’ll be able to walk like a normal person…” Determined, Yona works hard and eventually learns the spell. But one day, her doctor informs her that she has only one year left to live. Standing on the edge of despair, Yona chooses to go on a journey across the world in search of legends, as her final wish. What she doesn't yet know… is that along the way, she will perform countless miracles and become known as a “Little Hero.”