While Luffy's on his way to rescue Ace, everyone at Marine Headquarters get's ready for the execution. The present Shichibukai and the three admirals are summoned to get ready for Whitebeard's attack. At every instance, a Shichibukai or admiral is introduced there is a series of recap clips related to that character, with the exception of Akainu who is still a mysterious entity. (thetvdb.com)