In the ancient Kingdom of Nave, a young saint possessing remarkable healing powers emerges. Seraphina, the blind princess secluded in the forest, encounters her cousin Sirius Ulysses, a spirited vice-captain of the Unicorn Knights. Rather than rush her back to the capital, Sirius chooses to dwell in the forest with her. Their time together takes an unexpected turn when an event triggers Seraphina's dormant abilities, setting the stage for a delightful tale of the young saint and the formidable knight.