The soldiers at Fort Briggs remain ever vigilant against the threat of spies from Drachma. The massive compound may seem impenetrable - but a violent intruder offers destructive proof to the contrary.

Ed uncovers a conspiracy of staggering scope: a plot that has already claimed countless victims. Clues suggest that Fort Briggs will soon know bloodshed - and an entire nation will suffer.

As Raven tries to corrupt Armstrong, Ed and Al can only wait in their cell. Long ago, their father faced his own captivity, confined to an eternity of regret in an undying body. To escape the pain, he said goodbye.

Hawkeye is shocked when the first Homunculus reveals itself. Far away, Edward is surprised by an offer from Kimblee: Fullmetal can have all he has searched for - in exchange for becoming a mass murderer.

When Scar is cornered by a pair of gruesome chimeras, the Elrics enter the fray as his unlikely allies. Later, Winry's attempt to confront Scar over his role in her parent's death ends in disaster.

The ruse of Winry's abduction by Scar is revealed, but a plan of rescue must still be hatched. A brutal storm is coming - one which only Alphonse Elric can brave.

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.

Bound by more than blood, the Elrics have long shared joy and pain. Now, with Al wandering the frigid void - and Ed losing blood by Kimblee's hand - the mystical connection of their souls could prove fatal.

May and Marcoh's efforts to decode the research of Scar's brother yield progress, but it might be too late to prevent catastrophe. Violence is spreading across the land, and it will soon reach the northern border.

In the snowy north, the soldiers of Fort Briggs engage an invading army, and Marcoh leads an attack against monstrous Envy. In Central, an ominous and shocking secret is revealed to Olivier Armstrong.

Quiet warnings spread near and far: the Promised Day is at hand. While most will face the coming chaos with their own kind, Edward forms a new cabal comprised of human, chimera - and Homunculus.

Those who have prepared to reclaim a nation find their plans exposed. The chaos multiplies after an assassin strikes down a mighty leader in broad daylight, and Alphonse falls prey to monsters in the dark.

A sinister voice rings out from the shell of Al's armor, and Ed and Greed find themselves under attack. As the Homunculi use the darkness to their advantage, a face from the past arrives to join the battle.

As one shared journey ends, many journeys begin. Those most touched by the conflict which surrounded the Philosopher's Stone now go their separate ways. One thing is certain: they will meet again.