The Motor Boys Over the Rockies; Or, A Mystery of the Air

Three young friends who have built and navigated an advanced airship face the theft of their craft and pursue a mysterious trail that leads them westward. Their search involves rescuing their airship, investigating disappearances linked to an eccentric professor and a missing man, and aiding a troubled mining town. The journey crosses deserts and a hidden valley where strange lights, ritual gatherings, and hostile defenders culminate in a disguised infiltration and physical confrontation. Resourcefulness, aerial skill, and teamwork unravel the mystery and secure the return of companions and property, resolving threats and restoring safety.