Tonight during Super Bowl LI, Netflix aired the first teaser for Stranger Things Season 2. The trailer also confirms that Season 2 will begin on Halloween this year.

　　You can see all the best trailers from Super Bowl LI right here.

　　In November last year, producer Shawn Levy explained that Season 2's plot will showcase the main characters coming to terms with the events of Season 1. "Will Byers was in that Upside Down for a while," he said. "So Season 2 is about this determined desire to return to normalcy in Hawkins, in the Byers family, in that group of friends, and it's the struggle to reclaim normalcy and maybe the impossibility of it."

　　Levy will direct two episodes of Stranger Things' second season: chapters three and four. There are going to be nine episodes in all. In addition to his work on Stranger Things, Levy was recently named as the newest director for Sony's long-in-development Uncharted movie.

　　According to Matt and Ross Duffer, Season 2 will be "darker and weirder" than the first season. It's also been confirmed that Millie Bobby Brown's character, Eleven, is coming back for Season 2.