What would really happen if we got a message from space? How would we react? Scientists and sci-fi writers, with cooperation from SETI and Carl Sagan's son, Nick, unravel the impact of this world changing event, forming an intriguing hypothetical scenario .

How will humans react when an alien spacecraft arrives on Earth? Will humans learn from aliens, or become colonial subjects? Scientists and sci-fi writers, with cooperation from SETI and Carl Sagan's son, Nick, unravel the impact of this event.