Fullmetal Alchemist: Brotherhood - Season 1 Episode 31 The 520 Cens Promise Humankind cannot gain anything without first giving something in return. To obtain, something of equal value must be lost.
Overview: Even as his subordinates are scattered, Mustang finds he still has allies - unfortunately, so do his enemies. The Homunculi unleash one of the Ishvalan War's most notorious killers to deal with Scar and Marcoh.