Taking place after alien crafts land around the world, an expert linguist is recruited by the military to determine whether they come in peace or are a threat.
Agent Matt Graver teams up with operative Alejandro Gillick to prevent Mexican drug cartels from smuggling terrorists across the United States border.
As the end approaches inexorably, the last humans, living millions of years into the future, send a message to the humanity of the present that is both a plea for help and a warning, but also an epic tale of evolution, decline and hope.
