After the Final Exodus is a Science Fiction Novella, a sequel to the Coastal Event Memories Series. Four-hundred years later, the Coastal Event's survivor descendants have managed to recover much of the pre-event technologies and humanity. After the discovery of proof of a Martin City ruins, the three dominate corporate organizations unite in a crash effort to send a manned ship to the Red Planet.
The successful flight of Enterprise to Mars is completed with a smooth landing near the Martin City ruins. The crew soon discovers that sabotage to their ship has stranded them with no possibility for a safe return. As they contemplated their own mortality, a Phobos-based AI message welcomes them to the Federation of Sentient Space-faring Races. Later, the crew learns of a looming Extermination Event that will doom the entire population of the Earth, in less than seventy years.
The AI offers them a means to return home, with a way for Earth's population to escape the final extermination event. All that must be done in the next seventy years, is to construct a fleet of star ships capable of transporting a million people and everything needed for them to build new lives, to a solar system twenty-seven Light Years away.