If you haven't watched the fan letter to 80s movies that is Stranger Things, I don't know where you've been, but you've been missing out.
Stranger Things is a sci-fi horror movie stitched together from various 80s influences. It's John Hughes meets Steven Spielberg wrapped in Stephen King. The thing that makes it stand out is the love its creators obviously have for the time period, the horror genre, and the medium of film.
The plot follows a group of nerdy middle school friends, their families, and the town sheriff as they discover, investigate, and combat otherworldly forces unleashed by a secret CIA experiment.
Season 2 deals directly with the fallout of Season 1, picking up just short of one year after the events of the first season.
Here are some thoughts on Season 2. Spoilers ahead.