Ed discovers Sloth and Al at Tucker's research lab. He tries to convince Al that the Homunculus is not their mother, and not to be trusted, but Al is pretty sure that it'll be fine. So Ed has to do things his way. He reveals the pieces of his mother's inactive person that he dug up in Rizenbul, stunning Sloth, and giving him a chance to seal her forever. Lust had drawn a sealing transmutation circle with her claws, so it could not be destroyed, and Ed lured Sloth into it. The deal was almost done, when Al in his infinite wisdom decided that he was going to save the homunculus, so he threw the box containing a piece of his mother out the window, thus freeing Sloth. Lust held her at bay while Ed went to get the box, but Wrath was waiting outside, and decided to absorb the box into himself so Ed couldn't get it back. More and more it became clear that the brothers would not win this battle so easily, especially with Al helping out the Homunculus. Sloth freed herself from the circle, and while Ed chased Sloth, who was now controlling Al's body from the inside, Wrath and Lust squared off. Lust is easily destroyed though, as Wrath found her locket and used it to stop her on the transmutation circle. Wrathhuged Lust and headed off to find Sloth. Fortunately for the brothers, who were not in great shape at this point, Wrath was a bit inexperienced, and foolishly merged himself with Sloth. Having the box inside of him, this stopped them both and gave Ed his chance to destroy his creation, Sloth, once and for all.
s01e01 - Those Who Challenge the Sun
s01e02 - Body of the Sanctioned
s01e03 - Mother
s01e04 - A Forger's Love
s01e05 - The Man with the Mechanical Arm
s01e06 - The Alchemy Exam
s01e07 - Night of the Chimera's Cry
s01e08 - The Philosopher's Stone
s01e09 - Be Thou for the People
s01e10 - The Phantom Thief
s01e11 - The Other Brothers Elric (1)
s01e12 - The Other Brothers Elric (2)
s01e13 - Fullmetal vs. Flame
s01e14 - Destruction's Right Hand
s01e15 - The Ishbal Massacre
s01e16 - That Which is Lost
s01e17 - House of the Waiting Family
s01e18 - Marcoh's Notes
s01e19 - The Truth Behind Truths
s01e20 - Soul of the Guardian
s01e21 - The Red Glow
s01e22 - Created Human
s01e23 - Heart of Steel
s01e24 - Bonding Memories
s01e25 - Words of Farewell
s01e26 - Her Reason
s01e27 - Teacher
s01e28 - All is One, One is All
s01e29 - The Untainted Child
s01e30 - Assault on South Headquarters
s01e31 - Sin
s01e32 - Dante of the Deep Forest
s01e33 - Al, Captured
s01e34 - Theory of Avarice
s01e35 - Reunion of the Fallen
s01e36 - The Sinner Within
s01e37 - The Flame Alchemist, The Bachelor Lieutenant, And The Mystery of Warehouse 13
s01e38 - With the River's Flow
s01e39 - Secret of Ishbal
s01e40 - The Scar
s01e41 - Holy Mother
s01e42 - His Name is Unknown
s01e43 - The Stray Dog
s01e44 - Hohenheim of Light
s01e45 - A Rotted Heart
s01e46 - Human Transmutation
s01e47 - Sealing the Homunculus
s01e48 - Goodbye
s01e49 - The Other Side of the Gate
s01e50 - Death
s01e51 - Laws and Promises
'Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost. That is Alchemy's first law of Equivalent Exchange. In those days, we really believed that to be the world's one, and only, truth'.
-Alphonse Elric
Edward and Alphonse Elric are two brothers gifted with the ability of alchemy, the science of taking one thing and changing it into another. However, alchemy works on the theory of Equivalent Exchange - for something to be created, something else of equal value must be sacrificed. When their mother dies, Edward decides to do the unthinkable - bringing her back to life by breaking one of Alchemy's biggest taboos and performing Human Alchemy. Thinking they have nothing more to lose, he and Alphonse make their attempt - but something goes horribly wrong. In the process, Alphonse loses his body and Edward loses his leg. Ed manages to save Al by attaching his spirit to a suit of armor, but at the cost of his arm and leg.