Sinopse
When valuable mail shipments mysteriously vanish from heavily guarded planes, two amateur sleuths go undercover to crack a high-flying conspiracy. Suspicions fall on veteran pilots and shady mechanics as the boys navigate the dangerous world of early aviation and roaring propellers. A terrifying mid-air sabotage attempt proves the thieves will stop at nothing to protect their lucrative smuggling ring. A gripping tale of aerial thrills, dark hangars, and a race against time to prevent another fatal crash.
