On her twenty-seventh birthday, New York lawyer Cristina Wilson receives a diamond engagement ring from her fiancé, Mike, a wealthy stockbroker. Later that day, a messenger from Barcelona delivers a beautiful antique jewel, a ruby set in bone, from a mysterious sender. Cristina wears them both, unaware that they are incompatible. The ruby soon works its mysterious effects, giving her strange and unsettling dreams.

Cristina is swept away to Spain to attend the reading of her godfather's will, where she reunites with her first love, Oriol, and soon the powerful attraction that once overwhelmed them in their adolescent years is rekindled. Together Cristina and Oriol embark on an odyssey in search of a Templar treasure that has remained hidden for centuries in a place that only they can uncover. From New York lawyer to intrepid adventurer, Cristina experiences a profound journey of love, life, and death as she learns an unforgettable lesson that could redirect the course of her destiny.