Though Phase One of Marvel Studios’ film slate came to an end just a few months ago with The Avengers, production on Phase Two is already well underway.  The studio is currently in the midst of filming two upcoming sequels at the same time: Iron Man 3 and Thor: The Dark World.  The Iron Man production is winding down to a close ahead of that film’s May 2013 release date, but filming on Thor: The Dark World is still going strong in London and today the first official synopsis for the Asgardian pic has been revealed.

The logline essentially tells us what we already know: Thor (Chris Hemsworth) must fight against Maleketih (Christopher Eccleston) and his race of Dark Elves, Jane Foster (Natalie Portman) is back, the fate of the universe is in the balance, etc.  However, the synopsis does tease the film’s epic scope and the fact that Thor is forced to “sacrifice everything” in order to save us all (Thor dies?!).  Hit the jump to check out the full synopsis, which includes the full cast list.  Directed by Alan Taylor, Thor: The Dark World opens on November 8th, 2013.

Here’s the synopsis (via Stitch Kingdom):

Marvel’s Thor: The Dark World continues the big-screen adventures of Thor, the Mighty Avenger, as he battles to save Earth and all the Nine Realms from a shadowy enemy that predates the universe itself. In the aftermath of Marvel’s Thor and Marvel’s The Avengers, Thor fights to restore order across the cosmos…but an ancient race led by the vengeful Malekith returns to plunge the universe back into darkness. Faced with an enemy that even Odin and Asgard cannot withstand, Thor must embark on his most perilous and personal journey yet, one that will reunite him with Jane Foster and force him to sacrifice everything to save us all.

Starring Chris Hemsworth, Natalie Portman, Tom Hiddleston, Stellan Skarsgård, Idris Elba, Christopher Eccleston, Adewale Akinnuoye-Agbaje, Kat Dennings, Ray Stevenson, Zachary Levi, Tadanobu Asano and Jaimie Alexander with Rene Russo and Anthony Hopkins as Odin, Thor: The Dark World is directed by Alan Taylor, produced by Kevin Feige, from a story by Don Payne (credit not final) and screenplay by Christopher Yost and Christopher Markus & Stephen McFeely (credit not final) and is based on Marvel’s classic Super Hero Thor, who first appeared in the comic book Journey into Mystery“ #83 in August, 1962.

Thor: The Dark World is presented by Marvel Studios. The executive producers are Louis D’Esposito, Alan Fine, Stan Lee, Victoria Alonso, Craig Kyle and Nigel Gostelow. The film releases November 8, 2013, and is distributed by Walt Disney Studios Motion Pictures.