Dan Sylveste is an archaeologist of sources investigating why a particular race of aliens became instinct. Sylveste is also the only man to encounter the strange region of space called the Shroud and survive.
Because of this, a ship full of transhumans, named the Nostalgia For Infinity, want to talk to him.
These people converge on the strange planet Yellowstone, and another character becomes involved, a martially skilled woman named Anna Khouri, who ends up being co-opted to join The Nostalgia For Infinity.
The mystery of the Amarantin is at the heart of this, and is the actual Revelation we are waiting for.