On November 22, 2010 ten missiles strike Japan. This terrorist act does not result in any casualties, however. Three months later, Saki Morimi is in the United States of America on her graduation trip. But just when she stands in front of the White House, she finds herself in trouble, and only the unexpected intervention of one of her fellow countrymen saves her. But this man is a complete mystery - not only is he an amnesiac, but he is stark naked save for the gun in one hand and the mobile phone, charged with billions of yen in digital cash in the other.