During a standard slip-space jump aboard the Truthful Aura, Councilor Zeka 'Pamuee and his two Unggoy followers, Zugug and Xarar found themselves hurlding uncontrollably towards a old Forerunner instillation. The Truthful Aura had been struck mid slip-space and effectively shot down, the craft exploding mid atmosphere over a planet simply called Tyrrana by the Humans. However, 'Pamuee, Zugug and Xarar survived by flying a Phantom to the surface as the Covenant ship crashed into the surface, the collision accidentally unleashing a large containment of Flood. The now freed Infection Forms attacked any survivors they could find, infecting many; the infestation grew increasingly fast, overwhelming the unprepared Covenant survivors.