The official synopsis is as follows:
Thor is imprisoned on the other side of the universe and finds himself in a race against time to get back to Asgard to stop Ragnarok, the destruction of his homeworld and the end of Asgardian civilisation, at the hands of an all-powerful new threat, the ruthless Hela.
Well Thor: Ragnarok wasn’t in my most anticipated list of the year, but the teaser trailer definitely has my attention with a few details. The first being Cate Blanchett’s role as Hela, which hopefully will be one of the more compelling/fiercest villains in the MCU and from the little clips that we’ve got here, she looks set to chew up the scenery. The second of course is Thor coming across Hulk in the arena, that looks set to be a scene stealer. Thor: Ragnarok stars Chris Hemsworth, Tom Hiddleston, Cate Blanchett, Idris Elba, Jeff Goldblum, Tessa Thompson, Karl Urban, Mark Ruffalo and Anthony Hopkins.
Thor: Ragnarok is scheduled for cinematic release on the 27th October 2017.