This episode concludes the first season's primary mystery regarding the disappearance of Will Byers and the threat from the alternate dimension.
The search for "[S1E8] Over" points toward a few major series, but the most prominent "Over" title is the finale of , titled " Chapter Eight: The Upside Down " . Stranger Things Season 1, Episode 8: " The Upside Down " [S1E8] Over
: Back at the Byers' house, Nancy Wheeler, Jonathan Byers, and an unexpected Steve Harrington set a trap for the Demogorgon . While they manage to injure it, the creature eventually retreats to Hawkins Middle School where the other children are hiding. This episode concludes the first season's primary mystery
: Joyce Byers and Chief Jim Hopper enter the Upside Down after Hopper strikes a deal with Dr. Brenner. They successfully find Will, who is being kept alive by a biological tether, and perform CPR to revive him. While they manage to injure it, the creature
: The story jumps ahead one month to Christmas. Will is home and seemingly recovered, but a final scene reveals he is still connected to the Upside Down, as he coughs up a slug-like creature and has a brief flash of the other dimension. Alternative Series S1E8 Titles