Mystic Lune follows the story of Lune, a teenage girl who stumbles upon a mysterious artifact that transforms her into a powerful magical girl. However, unlike traditional magical girls, Lune's abilities are not just limited to cute tricks and sparkles. Oh no, Mystic Lune takes it to the next level with an extreme modification of the magical girl formula. With her newfound powers, Lune must navigate a world of dark magic, ancient conspiracies, and rival magical girls who will stop at nothing to claim dominance.