Brotherhood follows the manga (the original comic book series) storyline of Fullmetal Alchemist. 2003 Fullmetal Alchemist is one big lie and has hardly any resemblance to the real storyline ; _; Brotherhood is absolutely amazing, it's a must watch if you are interested in the manga or just want to become 'un-noobified' (i.e. you are an anime fan who bums the old series and thinks they are cool cuz you can make sense out of a series that doesn't make any sense.....).
Thank you for your time.
Guy1: "You seen Fullmetal Alchemist: Brotherhood?"