It is the year 1919. Forces of darkness have been terrorizing the people and are aggresively advancing towards Tokyo. A group of young women with psychic skills and special abilities are gathered from different parts of the world to form the Flower Division. They would be piloting steam-powered giant robots to combat the dark legions. And when they're not doing that, they would be staging theater productions to draw out their hidden powers. The problem is, they cannot work as a team and each girl is always going off on her own. Can the newly assigned commander lead the Flower Division to victory? And who's going to star in the next production?