The 2nd Fleet ORG is using the Star Trek Online Foundry System to create a continues story for all Officers to participate. Details of all offical final release missions can be found at:
http://www.2ndfleet.org/campaigns.htmlThe missions are available to all players in game. You can choose a mission via the mission tab, selecting "available" missions and "community authored". To find the right mission search for the name or the author.
The 2nd Fleet ORG campaigns are typically 3 missions long. It is therefore recommended to also get the "Investigate Officer Reports" Mission (offical mission also rewarding Dilithium).