Hyoudou Issei could be called the most perverted high school student ever, however he happens to be one of the most unlucky guys when it's about girls. One day he's asked out by a girl named Yuuma Amano, but at the end of the date he's killed by her - where she reveals her true identity, the Fallen Angel Raynare. Later on he's resurrected by the High class Devil Rias Gremory as her "Pawn". He then finds out the truth of Devils and joins the same club Rias founded.