This story starts with space ships scouring the universe in an interplanetary game of tag. The humans know there are “Aliens” out there. But so do the Aliens. As each tries desperately to make the phenomenal discovery, they secretly hope that the other will not turn out to be the enemy. Humans call them “Plumies” because of the feathery plumes they inscribe on silicon-bronze tablets and cairns they have left behind on their intergalactic travels over the last thousand years. The search goes ...