The story begins on October 1, 2054. Aurora (Rory) Bell, a professor of astrophysics at the University of Florida, has just made the discovery of the century. A sophisticated sensing device called a gamma ray burst detector has picked up a message from somewhere beyond the solar system. The easily decrypted message contains two unambiguous words: We're coming. Subsequent analysis reveals that the source of the message is heading directly toward Earth and is scheduled to arrive on the first day of January 2055. A media circus inevitably ensues, as the citizens of Earth attempt to prepare for a wholly unprecedented event.