Episode 31: Sin (2003 series)

At Central City, a huge Military force including the Mustang Unit is being deployed to head to the Southern Slums to apprehend Scar. While waiting for the train to leave Kain Fuery questions about the use of force against the Ishvalan refugees. While Roy Mustang verifies their mission is to catch only Scar, Vato Falman reminds them that given the recent mercenary incident against the refugees, the refugees might have trouble trusting the State Military. Rick and Rio under the orders of Scar's Master search for Scar, and upon returning to his tent the Ishvalan Exile is nervous around Scar until noticing his tattoo. Back at the Southern Command building, Major Armstrong recognizes and identifies Solf J. Kimblee the former Crimson Alchemist. Ed and Al hold off Izumi which allows for Envy disguised as Führer King Bradley to make off with the boy. Izumi tries to attack him with alchemy, but Armstrong thinking it's the real Führer counters her attack. While Armstrong continues to fight with Izumi countering his attacks, Ed and Al face against Bido and Kimblee. As Ed recognizes the secret to Kimblee's alchemy abilities, Frank Archer is overhearing their conversation.

Taken to a small room, Envy reveals to the boy the truth about his arm and leg and gives him red stones to eat explaining Homunculus are required to eat them to survive and also learns of the boys alchemy abilities due to Ed's arm and leg. The boy, who is the Homunculus Wrath, regains his memories about The Gate. As he and Bido are leaving, Kimblee encounters Archer. Archer asks if the Führer or Basque Grand are responsible for him still being alive. While Kimblee doesn't know, Archer mentions that he is capable of getting Kimblee exonerated for his past crimes and allowing him to be reinstated back into the military. As the Elrics find the defeated Armstrong, Izumi finds the boy noticing the change in his body, while Archer learns the Führer is actually at Central Command with no plans to travel south. The Elrics realize Izumi is gone and decide to leave too knowing it is more important to find Izumi first since they'll only be questioned.

Back at Sig's shop, Ed asks Sig Curtis where Izumi has gone. While Sig refuses to answer, Winry tells them about Izumi's Human Transmutation and they realize she left to where she performed it, Yock Island. While with Wrath, Izumi remembers the day of the transmutation, as Wrath mentions to hurry up and kill him. The Elrics and Winry arrive by boat on the island, and as Envy watches, the group arrives in time to save Izumi from being strangled to death. Stopping Ed from attacking, Izumi reveals she created Wrath as the result of the failed human transmutation of her dead son and placed him within The Gate while there. Ed soon learns that from Wrath that Envy told him that Homunculi are born as a result of a failed Human Transmutation. As Mustang's group arrives at the Southern Slums, which Yoki is happy with, though unknown to everyone there Lust and Gluttony are nearby in disguise. Sloth travels to Yock Island.

Greed and his group travels to Yock Island as well and are greeted by Envy, who points out to Greed it is too late to recruit Wrath. Greed faces him, and Envy suspects that Greed is hiding the Skull that imprisoned him in Laboratory 5 somewhere. Sloth arrives dealing with the chimeras and Kimblee. After introducing Sloth, Greed retreats with his group not wishing to deal with two Homunculi at once. Wrath reveals to Ed that during his time in the gate his body grew and a long while after claiming his arm and leg he was able to break out. Wrath reveals he plans to become human by stealing the rest of Ed's body. Knowing Ed is unwilling to fight, Al decides to fight Wrath in his place determined to get Ed's missing limbs back.