no picture of Olivier during the credits. Rewatched the episode.
As for the movie, it could take place in Xing, Ishbal, or the West. Xing is the obvious choice, of course.
2 - 3 years have passed. Emperor has passed away. Ling is to be coronated Emperor. But... someone has a problem with it.
Luckily for Ling, Al has been living in Xing, learnign Alhestry with May, for a while now abd Ed, Roy, Riza, the Armstrong siblings, Scar, and others have come to watch the ceremony as foreign dignitaries.
It's up to old pals to help Ling save the day and keep an evil Xing alchemist from usurping the thrown or destroying the country (pick one).
Back to the ending. Al's voice didn't match his age or body That as bad voice directing. The voice actress is clearly making her voice higher to sound like that of a boy. She should have been told to speak in her normal tone or to lower her voice a bit in order for it to match teenage Al a bit better. Big big oversight and big mistake on the part of the scriptwriters or voice director. Rie Kugimiya is capable of a lower pitched voice.