While in his hideout, Yinsen recalls when he was saved from being shot by terrorists by a woman named Sandra. Yinsen then gets a call from Zodiac's leader that an opportunity has come up for him. Meanwhile, Tony is nearly finished with his arc reactor, but Yinsen apprehends the shipment of plutonium needed to complete it using the Iron Man Dio armor. Iron Man and Yinsen battle before Yinsen escapes with the plutonium, leaving Iron Man to fight the Zodiac warrior Sagittarius, but he soon loses him. Yinsen then contacts Stark telling him that the people who rescued him were killed by Stark Industries weaponry and how he was approached by Zodiac's leader who convinced him that Tony Stark hasn't changed. The two once again fight for the plutonium, with Yinsen insisting that Tony has not changed. He reveals several models of Iron Man Sigma which he created by reverse engineering the Iron Man Dio armor and uses to attack the Arc Station. Yinsen defeats Tony, takes him out of his armor, and throws him into a river. Yinsen then arrives at the Arc Station to begin his new world order.