However, viewers were kept in the dark until season five's second batch of episodes, now streaming on Netflix.

Brenner’s notes explain that the Upside Down is a wormhole connecting Hawkins, Indiana to another dimension. Dustin dubs that ...

Find all the connections from previous seasons and 'The First Shadow' play that may help you connect the dots as you watch ...

Stranger Things creators the Duffer brothers finally explain what the Upside Down is after Season 5, Volume 2.

Stranger Things 5, Volume 2 finally explained what the Upside Down actually is, where it came from, and why we were all so ...

Stranger Things Season 5 Vol. 2 is here, and it answers burning questions we've had since the beginning of the series, like ...