Fullmetal Alchemist!! Alchemy is bound at this Law of Equivalent Exchange-something the young brothers Edward and Alphonse Elric only realize after attempting human transmutation: the main forbidden act of alchemy. They pay an awful price with regards to their transgression-Edward loses his left leg, Alphonse his physical body. It is only by way of the desperate sacrifice of Edward's right arm that he or she can affix Alphonse's soul towards a suit of armor. Devastated and alone, it is the hope that they would both eventually resume their original bodies which provides Edward the inspiration to acquire metal limbs called "automail" and become a state alchemist, the Fullmetal Alchemist.