chunk: The storyline features members of one of two factions, both capable of time travel, engaged in a long-term conflict called "The Change War". Their method of battle involves changing the outcomes of events throughout history (temporal war). The two opposing groups are nicknamed the Spiders and the Snakes after their respective sponsors. The true forms or identities of the Spiders and the Snakes, how those nicknames were chosen, or whether they are in any way descriptive are all unknown.
  The narrator of the novel is Greta, a young human female employed at a Recuperation Station where soldiers recover from battles. Greta is an Entertainer: part prostitute, part nurse, part psychotherapist. However, other characters narrate parts of the story in lengthy monologues about their experiences and opinions as they visit the spider-staffed facility.