What is the Fullmetal Alchemist blind alchemist about?

Answer 1

It's basically a side story that doesn't actually happen throughout the main story line, ed and al go to a mansion to talk to an alchemist who knew something about the philospher's stone, and (I don't want to give it away) but it's a sad ending.

Answer 2

If you are asking about FMA:

Edward, recovering from his wounds from Laboratory 5, is scolded by Maria Ross for almost dying. Needing his automail repaired, Ed calls for Winry to come to Central. When Winry arrives at the train station, Al contemplates what Barry had told him. After the brothers refuse to tell her about the events, Winry leaves in a fury and is dragged off by Hughes to celebrate Hughes's daughter's birthday. Hughes tells her that men tend to hide things so as not to worry anyone. Al decides to confront Ed about what he was afraid to tell him, asking if he was really an artificial soul. Unable to get an answer, Al runs off.

If you are asking about FMAB:

Ed leaves Winry in the custody of the military to catch up with Al. Meanwhile, as Bradley continues to chase after Lin and Lan Fan, Gluttony goes after Scar. As Ed rejoins Al in his fight against Scar, Gluttony arrives on the scene. Lin then joins the fight, and is able to capture Gluttony. Lan Fan manages to escape Bradley by cutting off her disabled arm to throw off her blood trail. Riza arrives and drives off with Lin and Gluttony, keeping it secret from the military. As Ed and Al are about to apprehend Scar, they are stopped by May Chang, who uses her alkahestry to escape with him. However, Ed and Al manage to take custody of her panda, Shao May. As they arrive back at HQ, they tell Winry everything. She feels depressed, believing all she can do is wait, but feels better when she receives a call from her customers back in Rush Valley. As she goes on the train back, Winry realizes that she actually has fallen in love with Ed. Meanwhile, Ed and Al join up with the others at a hideout, where Lan Fan's wounds are treated. Lin reveals to Ed, Al, and Roy that Bradley is a homunculus. When Gluttony hears mention of Roy, the one who killed Lust, he transforms and blows the corner off the hideout.

I copy and pasted the info from Wikipedia. :)