A bridge collapses under mysterious circumstances just outside of Shakesville, California, and Abel Span and Maria Leah—two young, aspiring engineers, and partners in Professor Zoomer’s Great Bridges class at Shakesville High—embark on a journey of danger and discovery to find out what caused it. After tracing the source to a small border town in New Mexico—close to the infamous No Fences bridge, a failed structure that had once been lauded as a beacon of U.S.-Mexican technical collaboration—the two become enmeshed in the investigation of a nefarious secret society that has been causing earthquakes and other catastrophes across the country.
