At the dawn of their period of usefulness, the Eidelons developed need of a guard. A race no one had quarrel with. A force to ensure harmony prevailed once negotiations had finished. They took great care to choose a species no one had met before and found a primitive, barely clothed species, far removed on the galaxy's outer spiral. Having brought some of them back, their evolution was accelerated with generous alterations, until they became the Eidelon's trusted acolytes – the Peacekeepers. It is theorized that the Sebacean's forebears were in fact Humans.
The activation of the Darnaz Triangle forces the Eidelon priests on Arnessk into stasis. The stasis lasts for 12,000 cycles, during which the remaining Eidelons lose their ability to influence peace and the Peacekeepers become more militant.
A heavily outnumbered group of Peacekeepers defends a monastery of nurses against the Venek Horde. The fighting ends in a truce after the leader of the Veneks realizes that only women and children remain in the monastery. The arrival of John Crichton, Aeryn Sun, Ka D'Argo, Stark, and Jool in the time period changes history, eventually preserving the end of the war, but leading to the slaughter of the nurses and children.
Aeryn Sun has a romantic affair with Lieutenant Tam Velorek while stationed aboard the LeviathanMoya. Velorek joins Pilot to Moya, replacing another, less cooperative member of his species. Velorek reveals his sabotage of CaptainCrais's project to Aeryn Sun. Aeryn Sun betrays Velorek to Crais in return for transfer to duty as a Prowler pilot leading Crais to imprison, then (likely) execute Velorek.