Surfaces are deceiving. After falling for Ezra and discovering a gateway to the Otherworld, it’s a truism Ruby knows to take to heart. But La Luna finally feels like home, and with graduation just weeks away and a cushy internship on a nearby archeological dig in her pocket, it’s easy to downplay the strange new events taking place in the Glorieta Pass. Even when Angel’s deadbeat father reappears after twenty years, stirring up questions about Angel, the ruin, and Ruby’s mother.

Uncertainty is bad enough, but when Ruby starts having inexplicable visions, and the archeological dig unearths mysterious artifacts connected to both a fabled Aztec city and the Pecos Pueblo, Ruby faces more than an uncertain future — she’s forced to accept the role of True of Heart. Will Ezra and her friends stand by her as she confronts the Otherworld? Love is enigmatic, especially in the heart of New Mexico, but as Ruby will discover, the Otherworld is the biggest mystery of them all.