Season 1, Episode 5 of Stranger Things , titled marks a pivotal turning point where the characters stop just reacting to Will’s disappearance and start investigating the mechanics of the "Upside Down". Plot Summary
After discovering the "fake" body in the morgue, Chief Hopper breaks into Hawkins National Laboratory . He fights his way to the lower levels and discovers the organic, pulsing gateway to the Upside Down before being knocked out and waking up in his home, which he realizes is bugged. Stranger Things 1x5
While hunting the "Monster" in the woods, Nancy and Jonathan find a wounded deer that is suddenly dragged into a tree. Nancy crawls through a portal in the base of the tree and finds herself in the Upside Down, coming face-to-face with the Demogorgon. Key Character Moments Season 1, Episode 5 of Stranger Things ,
This episode establishes the "rules" of the show's universe. It transitions the series from a missing-person mystery into a high-stakes sci-fi horror by visualizing the portal and explaining the theoretical physics behind the alternate world. While hunting the "Monster" in the woods, Nancy