Tony Stark arrives in Japan with the aim of setting up the Arc Station in the first step in his World Peace Initiative. In front of all of Japan, he announces his new Iron Man model, Iron Man Dio, with himself in the pilot’s seat... But during the demo, Dio crashes after a mysterious bug in the operating system. Later at Lab 23, the Dio armor takes over it’s human pilot and begins to attack the facility. Tony is forced to pull his original Iron Man armor out of retirement and chase after Dio, but before he can catch his breath, the Zodiac warrior Mech Scorpio appears.