The era of the Great Exodus has passed. Centuries have passed. The earth is overpopulated, and the fate of the colonists who went to the stars is unknown. An attempt to start a second wave of expansion leads to a shocking discovery: all available planets within one jump radius of the solar system were inhabited during the Exodus. The colonists created unique, distinctive civilizations, but this does not matter when it comes to the survival of billions of earthlings... The main time of action according to the chronology of "History of the Galaxy" is 2607.