On the continent of Babel, alchemy was banned centuries ago after nearly destroying civilization through warfare. In Continental Year 911, the nation of Lustrice breaks that pact, raising an army strengthened by alchemy in a bid to conquer the continent. Led by Envylia, the other six nations join forces to defeat it, and alchemy is sealed away once more. Twenty years later, alchemy begins to throw the land into turmoil again. Kasumi, an ordinary high school girl from Earth, is summoned to Babel to stop the Sorcerers of Darkness from taking over the world. The fantasy film is adapted from a tactical role-playing smartphone game by Fuji&gumi Games.