"The Submergence of Japan!"
The X-Men finally arrive in Japan but it is burning from a mysterious earthquake and fire. Scott and the team try to get to the house of former member Sunfire through the chaos and confusion only to find Misty Knight with Sunfire. The island is rocked by another earthquake. To add insult to injury, the Mandroids arrive to take the X-Men prisoner, but they have nothing of it as they defeat the menace, another one arises, Moses Magnum, the man who created the earthquakes, gives his ultimatum, name him "Boss" or the island sinks.
First appearance of Mariko Yashida.