A strange mass breaches surface of an ocean near Antarctica, sparking rumors of a mythological sea monster; an area of the US-Mexico border becomes an international mystery; ancient rock carvings in a remote mountain range depict unearthly beings.

A vast structure buried in the sands near the legendary city of Petra points to a bloody past; when terrorists kidnap more that 200 schoolgirls in northern Nigeria, rescuers use satellites to track them down.