Beyond the Inferno
Riza sees through Envy's disguise as Roy and shoots him until the real Roy arrives and mercilessly incinerates the homunculus, reverting him back to his parasitic form. Before Roy can kill Envy, Ed, Riza, and Scar persuade him to let go of his anger and his need for revenge, for Amestris cannot be ruled by someone consumed with hatred. Envy becomes outraged by Roy's change of heart and rants about why everyone does not kill each other, trying to goad them into doing so by pointing out all of the terrible things they have done to each other. Ed determines that the reason Envy hates humans is because he is jealous of their capacity to continue living on, despite all the abuse they take. Humiliated and insulted by how Ed understands him, Envy commits suicide by tearing out and destroying his own Philosopher's Stone. Meanwhile, the Armstrong siblings begin to gain the upper hand in their battle against Sloth; Izumi arrives in Central, allied with Briggs soldiers, to participate in the coup; and Hohenheim confronts Father alone.
Aired 25/04/2010EP 54 - Beyond the Inferno
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)