WATCH: 'Stranger Things' season 2 teaser drops Demogorgon from the sky!

The world of Upside Down is not done with the kids from Stranger Things. The first ever teaser for the upcoming second season of the Netflix show was aired during Super Bowl 51 shows and what's lurking in the other dimension.

Directed by the Duffer Brothers, Netflix's Stranger Things became the summer sensation of 2016. The show was nominated for all the awards out there but only got their hands on Screen Actors Guild's Awards trophy for Best Drama TV series category.

The new teaser starts with an old advertisement of Eggos, Eleven's (Millie Bobby Brown) favourite food. Right after that, we see her wake up from possibly a nightmare as we hear her name being screamed in the background.

Then we see Mike Wheeler (Finn Wolfhard), Dustin Henderson (Gaten Matarazzo), and Lucas Sinclair (Caleb McLaughlin) gripped by the Ghostbusters fever as they zoom past on their cycles possibly to save someone or to get away from someone. 

In the trailer, Will Byers (NoahSchanpp) is seen being experimented on just like Eleven was in season one. But he has his mother Joyce Byers (Winona Ryder) by his side. Sheriff Jim Hopper (David Harbour) is still trying to find answers. But there are still no signs of Barb, who is believed to be alive in the second season.

The show is set to release on Halloween 2017.

Watch the trailer: