The Abyss
Miles and his men set off with the intent of killing Kimblee and his henchmen, something Ed objects to. As Scar's group exits the mine, they find Al, who warns them about Central infiltrating Briggs, so Scar decides to take them towards an Ishbalan slum. Miles' group attempts to snipe Kimblee, but Kimblee has already figured out their intent and uses a cover of snow to enter the mines. Ed tries to follow, but is attacked by two more chimeras. Ed disables them by using the ammonia in dynamite to make a stink bomb to overwhelm their high sense of smell. Ed then knocks the Philosopher's Stone out of Kimblee's hand, but Kimblee uses another Stone hidden inside his mouth, sending Ed and the chimeras down a mine shaft and leaving Ed impaled by a steel bar. At the same time, Al starts to drift out of consciousness, saying his soul is being drawn back to his body. Determined not to die, Ed gets the chimeras to remove the bar while he sacrifices some of his life span to temporarily fix the wound and to stop the bleeding. The chimeras find the Philosopher's Stone that Kimblee dropped, and, thankful for their rescue, decide to take Ed to a doctor.
Aired 24/01/2010EP 41 - The Abyss
Fullmetal Alchemist: Brotherhood
"In order for something to be obtained, something of equal value must be lost."
Alchemy is bound by this Law of Equivalent Exchange—something the young brothers Edward and Alphonse Elric only realize after attempting human transmutation: the one forbidden act of alchemy. They pay a terrible price for their transgression—Edward loses his left leg, Alphonse his physical body. It is only by the desperate sacrifice of Edward's right arm that he is able to affix Alphonse's soul to a suit of armor. Devastated and alone, it is the hope that they would both eventually return to their original bodies that gives Edward the inspiration to obtain metal limbs called "automail" and become a state alchemist, the Fullmetal Alchemist.
Three years of searching later, the brothers seek the Philosopher's Stone, a mythical relic that allows an alchemist to overcome the Law of Equivalent Exchange. Even with military allies Colonel Roy Mustang, Lieutenant Riza Hawkeye, and Lieutenant Colonel Maes Hughes on their side, the brothers find themselves caught up in a nationwide conspiracy that leads them not only to the true nature of the elusive Philosopher's Stone, but their country's murky history as well. In between finding a serial killer and racing against time, Edward and Alphonse must ask themselves if what they are doing will make them human again... or take away their humanity.
(Source: MAL Rewrite)