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.
