Cooperation between Mustang's cabal and Ling Yao's band leads to the capture of a Homunculus. Unfortunately, their actions also capture the eye of the Homunculus hiding atop the military's ranks.

The Homunculi are winning. Ed and Ling face a horrific enemy within the hellish expanse of Gluttony's gut. In Central, Mustang can only watch as his loyal band of soldiers is divided by Bradley.