In Yokohama, vampire hunter Blade attacks a vampire feeding ground, which is camouflaged as a nightclub and acts as a front for the Asian vampire group, Existence.

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.

Asano, an investigator for Japan’s security police, visits Logan in New York. He explains that the father of Logan’s former girlfriend, Mariko Yashida, is arranging a political marriage for her. Her father, Shingen Yashida, is the leader of the organized crime organization, Kuzuryu, and this marriage will solidify his power in the region. Logan travels to Japan and invades Shingen’s residence, finally reuniting with Mariko. But the reunion is short lived when he meets Mariko’s betrothed, Hideki Kurohagi, and her father, Shingen.

When a mutant high school student named Hisako Ichiki goes missing in the northern part of Japan, her parents ask Professor Xavier for his help. Sensing that the case of Hisako’s disappearance is of great importance for mutantkind, he gathers together his X-Men. However, the leader of the X-Men, Cyclops, who had lost his lover Jean during battle, refuses to return.