FN FIVE SEVEN NO FURTHER A MYSTERY

Voiceover: News on the godlike strangers on their four-legged animals is taken by royal messenger towards the emperor in the Incas, who’s camped inside the valley of Cajamarca in northern Peru, guarded by an army of 80,000 Guys.@Roger V.'s answer is often a good one particular and I've upvoted it. There are many other extra plausible good reasons