Players worked through the team's battles with the Shinra Electric Power Company's resistance, including Turks operative Reno, in pursuit of Sephiroth, who has already summoned Meteor, threatening to shock Gaia enough to absorb its very life force and become a god.
During the run of this event, all characters save Reno were otherwise available in the main game. Zack and Barret were added as bonus characters prior to the event's debut. Cid and his Memory Crystal would otherwise require completion of dungeons rated 90 or higher.
The event main theme was "One-Winged Angel" from Final Fantasy VII.
- As the first event of the third major wave that began December 14, 2015, Blood Madness was the first event to use an opening FMV. Players were introduced with a clip of Sephiroth walking amid the burning of Nibelheim.
- This is the first event in which the leading character (Sephiroth) is not at the topmost dungeon. This role fell to Reno, a minor antagonist in the source story.