In December of UC0073 Investigator Leopold Fieseler of the Zeon National Public Safety Division is investigating a series of terrorist bombings that have been occuring on Side 3 when without warning he is contacted by an old childhood friend, Elise Ann Finnegan, who is now working with the Prefectural Office.

When they meet, she hands him a disk containing a list of Zeon Officials marked for assassination; Officials who have been dying during the very bombings he is now investigating.

At first he thinks that its data that has been leaked to the press, but as he scrolls down he discovers something further. This list does not stop with those who are already dead, and at the bottom of the list is the name "Commander Gihren Zabi" - the Leader of the Principality of Zeon.