Death

Fleeing zeppelins in a parallel world, Edward realizes he now inhabits another person's body, and Hohenheim explains that this realm sits on the far side of the Gate, one that advanced through science rather than alchemy. He reveals the terrible truth that the deaths of this world fuel every transmutation back home, the energy of departing souls passing through to grant alchemists their power. His own centuries of survival came at the cost of decaying skin from repeated soul transfers.

At the Fuhrer's mansion, Hawkeye serves as a deliberate distraction so Mustang can slip inside unseen. Meanwhile Dante erases Gluttony's tattoo, reducing him to a mindless devouring creature after Lust's death leaves him unable to obey Envy.

Sealing them both underground, Mustang confronts Bradley, who removes his eyepatch and reveals himself as Pride. Their duel turns on Pride's Ultimate Eye, which lets him read the air currents feeding the flame alchemy, and he splits the airflow to spoil Mustang's ignition. Even a room-shattering blast fails to finish him. Back at Dante's lair, Rose's baby is used to summon the Gate and sever Edward's original limbs, an act that reopens the passage and lets his soul return to his healed body.

Envy torments the grieving Edward by wearing the faces of the slain Marcoh and Hughes, then finally shows his true form, which resembles Hohenheim. Dante explains that Envy came into being as the earliest homunculus, born of Hohenheim's failed attempt to revive the son he fathered with her, and that his hatred stems from being abandoned. Transforming his arm into a blade, Envy runs Edward through the heart, ending his life at once and jolting Rose out of her trance.

The episode carries no preview for the following and final installment. Its parallel-world premise, tying alchemical energy to the deaths of another Earth, sets up the series' movie continuation and diverges sharply from the manga's cosmology. Envy's origin as Hohenheim's dead son is a defining twist unique to this adaptation.