On Alisse's 15th birthday, there were no cakes and flowers. They were replaced by pain, tears and an agonizing truth. Only in one night, she lost everything : Her dream, her ideal of life and herself. She had no idea where she actually belonged to. Angel, Human or Demon? She was none of them. She belonged to nowhere. And when the invisible door was opened, somebody had to close it, to protect their precious ones. A battle had begun... ... but not only just between Angels and Demons.