Rachel is a teenage witch. Lauren is a young, pretty high school girl. Lauren is also a powerful "wellspring", a person able to fuel a witch's magic through sex. They're made for each other!
Rachel has discovered that Lauren is a wellspring, a source of great magic power for the witch or warlock who beds her. However, Lauren wants nothing to do with this. She just wants to be a normal, popular girl. things – as they say – cannot be so simple.
Rachel, witch, priestess, and the ambitious leader of a growing coven, travels to Italy with her friends – seemingly for shopping and fun – but she has a darker mission. She faces the ambition of rival witches, the appetites of an old goddess of the earth, the misery of desperate criminals, and finally, an ancient order of magicians who command beings from the outer spheres. Raw power won't be enough, and she will need the love and trust of her friends, both old and new.