While exploring deeper in the woods than they ever had, Chase and his two buddies discovered a seldom-used railroad spur built to service a facility that had long since seen its better days. With nothing better to do, they followed it to see where it led. They soon came upon a small creek flowing beneath a wooden trestle. It stood as a substitute for the granite rocks that supported the tracks they'd been following. Little did the boys know what adventures that trestle would provide, the treasures it would yield, or the trouble it would cause.