Set in Munich, Germany, in 1923, the story follows Edward Elric, who has been stranded in our world for two years after being pulled from his own realm. Without his alchemical abilities, he has devoted his time to researching rocketry alongside Alphonse Heiderich, a young man who bears a striking resemblance to his brother. Their goal is to find a way back home, but so far their efforts have been unsuccessful. When Edward assists a troubled gypsy girl, he becomes embroiled in a chain of events that threaten both worlds. Meanwhile, in his original world, Alphonse Elric delves deeper into alchemical mysteries, seeking a method to reunite with his older brother.