In the year 2299, Yuna Kagurazaka was just an ordinary—if somewhat scatterbrained—high school girl, right up until she won the Galaxy Fraeulein Contest and was launched into idol stardom. Then her fellow contestants started disappearing, only to reappear wearing power armor and trying to kill her. The explanation, when it comes, is not exactly what a teenage idol expects: Yuna is the Savior of Light, destined protector of the entire galaxy. The Thirteen Fraeuleins of Darkness want the universe for themselves, and she is the only one standing in their way.