Jade is a seventeen-year-old girl that has been surrounded by demons all her life, even though she has never dared to talk to anyone about them. She's spent so much time with them that she doesn't even ask why they are there or why they terrify her every single day, she only knows that they act as if she were their toy and there doesn't seem to be anything to do about it. She also has an angel at her side, an angel whose task of supporting and helping her is not easy at all because she doesn't think of her creator as a loving father, but as an executioner that set her to play this horrifying game without asking for her opinion.

She is one of 'The Seven'; Pieces in a Game that has been played for centuries, a game in which seven human beings, every seven years, are given the most incredibly valuable gifts and they don't know they have them when they are born. A game in which angels and demons can only be advisors, not players, and there's where human beings come in. They have to play a game of which they will learn the rules as they play; trial and error, only that the slightest error can take them to a sure death. In this case, Jade's error has been to fall in love with her opponent, his greatest mistake... to fall in love with her.