Description: Six years ago, a NASA probe returning to earth with samples of an alien life form crashed over Central America. Soon after, new life forms began to appear, and half of Mexico was quarantined as an "infected zone.". Today, the American and Mexican military still struggle to contain "the creatures"... The story begins when a U.S. journalist agrees to escort a shaken American tourist through the infected zone in Mexico to the safety of the U.S. border.