Collected in a beautiful Deluxe Edition hardcover edition for the first time, this tale recounts Barry Allen and Hal Jordan's early adventures together and answers the question of how the Fastest Man Alive and the Emerald Knight were able to put aside their differences to form an unbreakable bond! Also featuring appearances by Kid Flash, Green Arrow and more! Collects issues #1-6, along with a new introduction and a never-before-published full-issue script.