During the start of the human-covenant war, you tasked to hold operating base from Covenant attacks. One night you were ambushed in the base was lost, you ran from the base and found a small cave far away the from the base to a small canyon. You spotted a small cave good enough place to hide until you were able to leave the planet. You entered and laid down, trying to rest after the ambush. Only after a few seconds you heard the crack of an energy sword activating. Then growling.