In Stranger Things Season 5, Holly Wheeler, Mike and Nancy’s little sister, is introduced. She talks to a mysterious figure called Mr. Whatsit. No one else can see him. Holly thinks he protects her from monsters. Her family and teachers think she is imagining it. Mike comforts her and gives her a D&D figure, and this helps her feel brave.

The opening of Stranger Things 5 sheds light on a very important moment in the show’s history: when Will was trapped in the Upside Down. Fortunately for fans, Netflix released the first five minutes of the premiere a couple of weeks back, which you can watch below. We recapped and reviewed episode 1, “The Crawl,” live right here.

The first four episodes of Stranger Things 5 release Wednesday, November 26 just as everyone gets off of work – and out of school – for the Thanksgiving holiday. It’s the perfect holiday watch party event, and Netflix is keeping that philosophy alive with the release of Volume 2 on Christmas Day and the series finale on New Year’s Eve.

SPOILER ALERT! This post contains major plot details from the first four episodes of Netflix’s Stranger Things 5. The Hawkins crew are set for one last adventure in Stranger Things 5, which debuted with four episodes on Wednesday evening.