▁and ▁war es , ▁slowly ▁pie cing ▁together ▁the ▁identity ▁of ▁the ▁Black ▁Arm ory ' s ▁myster ious ▁ass ail ant ▁who ▁has ▁been ▁ste aling ▁the ▁Lost ▁F org es — used ▁by ▁the ▁Black ▁Arm ory ▁to ▁craft ▁their ▁weapons — for ▁themselves . ▁After ▁discover ing ▁three ▁of ▁the ▁for ges — Vol und r ▁in ▁the ▁European ▁Dead ▁Zone , ▁and ▁G of annon ▁and ▁Iz an ami ▁on ▁N ess us — the ▁Guardian ▁disco vers ▁that ▁the ▁mystery ▁ass ail ant ▁is ▁a ▁F allen ▁captain ▁named ▁S iv iks , ▁Lost ▁to ▁None , ▁the ▁for s aken ▁brother ▁of ▁the ▁Spider . ▁S iv iks , ▁seeking ▁to ▁pl under ▁the ▁Black ▁Arm ory ▁v ault ▁in ▁the ▁Last ▁City , ▁dispatch es ▁an ▁invasion ▁force ▁led ▁by ▁In sur re ction ▁Prime , ▁K ell ' s ▁Sc our ge , ▁a ▁Prime ▁Serv itor ▁built ▁into ▁an ▁immense ▁b ip ed al ▁war ▁machine . ▁A ▁fire team ▁of ▁Guard ians ▁confront ▁and ▁destroy ▁the ▁machine ▁at ▁a ▁des olate ▁section ▁of ▁the ▁city ▁housing ▁the ▁v ault ▁(" Sc our ge ▁of ▁the ▁Past " ▁ra id ), ▁which ▁later ▁prompt s ▁the ▁revel ation ▁of ▁the ▁last ▁For ge , ▁Berg us ia , ▁and ▁its ▁location ▁in ▁the ▁European ▁Dead ▁Zone . ▁Upon ▁discover ing ▁and ▁ign iting ▁the ▁Berg us ia ▁For ge , ▁the ▁Guardian ▁is ▁able ▁to ▁un lock ▁a ▁myster ious ▁box , ▁containing ▁a