Maes wakes up in the Elemental Countries after his death, and promptly gets into trouble. Genma gets him out of it.

Unwillingly forced to serve as a human trial for a crazy alchemist experimenting with time travel, Edward Elric finds himself standing across from Truth in the moment it takes his leg from him. Armed with the knowledge of what's to come and burdened with guilt for the choices he'd made as an adult, Ed sets out to fix every mistake he ever made and save every life they ever lost, no matter what it takes.