For as long as she can remember, Nora has known that she was adopted. Moving to Glen Rose, Texas after her father accepted a teaching postion at the local high school, Nora encounters an unlikely group of siblings with secrets of her past that she never cared to know. Nathaniel, Serena, Thomas, and Paul introduce Nora to a battling world of magic, pitting her against her biological father, who will stop at nothing to get her back. When all goes wrong, Nora meets Sam, an ex-member of her father's allegiance who takes her under his wing, teaching her to use her newly found gifts.
On her 16th birthday, Yana's Russian grandmother Nonna tells her that she comes from a long line of witches. As her powers begin to grow under Nonna's tutelage, Yana learns of the terrible warlock Valentin who has been systematically hunting Nonna's sisters to take their power. Yana and her boyfriend Caleb travel to Russia to find the remaining sister who is hiding there, with Valentin on their heels.