Alchemists vs. Homunculi.
This short was originally shown at Universal Studios Japan. In this interactive short, the viewer is introduced as a new member of the military, welcomed by Fuhrer Bradley who assigns the viewer to Mustang's group. After a briefing on how the Fullmetal Alchemist world works, Mustang instructs his troops on a plot to rescue the Elric brothers from the homunculi. In the underground city, Greed has captured Edward, Alphonse and Winry, although Winry is revealed to be Envy in disguise and easily defeats Greed. Envy then lures the brothers into a trap set by Lust, Gluttony, Sloth, and Wrath. The fight leads to a ballroom where Mustang shows up, along with his troops and reinforcements including Armstrong, Kimblee, and Archer. A large battle follows which ends when the viewer activates an alchemy ring received from Mustang. Unfortunately, according to Armstrong, the viewer seems to have overdone it, and the building blows up as a result. Everyone survives, with Edward and Alphonse congratulating the viewer on their hard work before departing themselves.