Cat Daniels is a 15-year old high-school student who is beginning find out about boys, her other classmates, and the value of history. She is close friends with Tara, a girl of her own age. All in all, Cat would seem to be quite a normal young lady — but for one thing: she has visions. In one of these visions a priest asks her to accomplish a mission that he had been unable to fulfill in his lifetime. What that mission is, Cat must find out for herself.