Long ago, the blood of a simple slave was used in an experiment which created a strange, shapeless being. In exchange for the gift of existence, the being gave the slave a name - and cursed him with immortality.

As Envy writhes within the firestorm unleashed by Mustang's vengeful rage, Hawkeye must take drastic measures to prevent the Flame Alchemist's hatred from burning out of control.

A truly epic battle erupts when Edward, Mustang, Hawkeye, Greed, Izumi, and Armstrong attack the god-like Father. The odds are against the forces of good - until one brave boy makes a shocking sacrifice.

When the battle ends, the one known as Father meets his final fate beyond the Gateway. When the one known as Fullmetal enters the sacred space, he finds only the promise of a new beginning.