In alchemical transmutation, which went wrong, Edward Erric lost his right hand and left leg, and his brother Alfons lost his body, ultimately not more than a soul in empty armor. Equipped with members of the mechanics "AUTOMAIL", Edward turns into an alchemist of state armed forces, and begins a long journey of the Amestris nation along with his brother, trying to restore their bodies in its original form when searching for a challenge of a philosophical stone, which, as they say, gives alchemist ability to ignore the law The sharing is the same. First, the Erric brothers mean this only goal, however, when their journey continues, they discover that they are fighting for being much more, than they ever could imagine.