Set in an alternate World War II, one where young women are called up to fight alongside men. This is the story of Rio, Jenou, Frangie and Rainy. Four very different women, enlisting in the War effort for very different reasons, who share the very same goal, to bring Hitlers reign in Europe to an end. But, not everyone believes that these girls should be sharing the front lines. Now Rio and her friends must fight not only to survive, but also prove their courage and ingenuity to enemies and allies alike ... Because the fate of the world, and the course of history is in the hands of the girls on the Front Lines.