The story takes place in a broken-down generational space ship that has lost (and largely forgotten) its purpose centuries ago. It has been orbiting a constellation of twin suns for 500 years and has slowly degenerated into a balkanized and feudal-like society, rife with a violent and centuries old conflict between the Houses of Rule and Engine, the almost unrecognizable descendants of the space ship’s Command and Engine sections. Thus the story opens with the latest chapter in a war whose causes are obscure and largely forgotten in a vicious circle of never-ending violence.