The MahoHadlos are a magical girls maked to save the city from a creatures called Zetsubou,Kayuka Yashura is a girl who receives a offert by a strange creature called Uragirimono to be a MahoHadlo. One day passed when Kayuka received the offert,Kayuka was saved by a MahoHadlo called Dantou. Will Kayuka accept the offert from Uragirimono?