When the mysterious and passionate Rhane rescues Kali from an attacker in the theater parking lot, they form an immediate, smoldering connection. But Kali doesn't remember Rhane or anything from their past. As far as Kali knows, she's just a seventeen-year-old kid coping with an insatiable hunger for the “spark” or energy of others, feeding on classmates to survive.

A unique artifact—one that may hold the key to returning Kali’s memories—is uncovered by the archaeology firm where she works part-time, sending Kali and Rhane on a dangerous journey that leads them to the Forbidden City, into the unforgiving Gobi, and into the ruins of Rhane’s ancient homeland. As they fight for survival, Kali begins to discover who she really is and the true power she possesses. But Rhane still harbors a secret that could destroy Kali…unless old enemies kill her first.