The Charum Hakkor campaign was a conflict between the Forerunners and the Human-San'Shyuum alliance, a union between the human empire and the technologically advanced San'Shyuum race; the campaign was the last conflict in the Human-Forerunner wars. It took place above and later on the planet Charum Hakkor, the heart of the humans' interstellar empire, around nine thousand years prior to the Forerunner-Flood war. It concluded in the Forerunners defeating the humans' empire.