Himeno, a 16 year old high school girl who found herself in a new home after her novalist father married a wealthy widow. Her step sisters both dislike her for differet reasons and her friends in school have been keeping away from her because they think her father remarried for money. While she is depressed from all the unhappy things in her life.
Out of nowhere seven guys of different age and appearance appeared before her, claiming to be 'Spirit Knights' and claiming she is the 'Pretear', the princess of light that leads them. Just as Himeno walks away believing all of it to be a joke, a monster grows from a demon seed in the water infront of her eyes and she was force to fight with the knights. Thus the saga of a new Pretear begins...