The Earthquake Machine tells the story of 14 year-old Rhonda. On the outside, everything looks perfect in Rhonda's world but at home Rhonda has to deal with a manipulative father who keeps her mentally ill mother hooked on pharmaceuticals. The only reliable person in Rhonda's life is her family's Mexican yardman, Jesús. But when the INS deports Jesús back to his home state of Oaxaca, Rhonda is left alone with her increasingly painful family situation. Determined to find her friend Jesús, Rhonda seizes an opportunity to run away during a camping trip with friends. She swims to the Mexican side of the Rio Grande and makes her way to the border town of Boquillas, Mexico. There a peyote-addled bartender convinces her she won't be safe traveling alone into the country's interior. So with the bartender's help, Rhonda cuts her hair and assumes the identity of a Mexican boy named Angel. She then sets off on a burro across the desert to look for Jesús. Thus begins a wild adventure that explores the borders between the United States and Mexico, adolescence and adulthood, male and female, English and Spanish, and adult coming-of-age and Young Adult novels.