Living world ships move through space; if there is any destination the people on the ships don't know it nor any history of another way.  Sadly for these women the worlds are dying as entropy finally seems to be beating out their long living systems.  Rival factions war for resources; recycling what they find in an effort to extend the life of their own piece of the sky.  Zan wakes among one of these factions and slowly learns she has an ambitious plan for a rebirth of kinds.  Problem is an almost complete memory loss gives her no idea what the plan is.