After the dreadful events related to her mother, Katsumi Liqueur has just one thing in mind: To leave this horrible town as fast as possible, a town where she knows nobody and has no friends. But she soon faces serious obstacles as Rally Cheyenne, the commander of the Attacked Mystification Police, hasn't given up her plan to recruit Katsumi for her team in order to defend the citizens against the Lucifer Hawk demons. And the AMP aren't the only ones interested in making use of Katsumi's magical powers...