内容简介：
In mid 1800's New Mexico, a dangerous world is waiting. Zach Malone and Elena de Alba, two extraordinary 15-year-olds from different cultures, are forced into one perilous adventure after another. Both having lost their families in Apache attacks, their escape takes them into a gripping and frightening tale of adventure with both Apaches and white men. Unable to find a safe haven, they discover the entrance into a parallel universe.There they find even more formidable adversaries. As they move with nonstop action from one threat to another, their honesty and kindness earn them new friendships, but the alternate world proves to be more lethal and violent than their own. They must depend on each other for their survival. Although Zach is badly wounded, with an unexpected ally's help, they succeed in returning to their homeland.