Dustin tries to escape Starcourt with the others, while Nancy and Eleven lead a fight against the Mind Flayer.
El seeks the source at great detriment to herself. Robin and Steve are in big Soviet trouble.
Nancy, Jonathan, and the kids join forces while Chief Hopper and Joyce flee the big Russian.
Will and his friends look for the Mind Flayer. Nancy and Hopper uncover new info about Starcourt.
El and Max search for the missing lifeguard. Robin cracks the Soviet code.
Dustin tries to crack the Soviet code. Nancy and Jonathan find diseased rats. Eleven makes a relationship decision.
Hawkins, Indiana is experiencing strange things once more. And it's connected to the Soviet Union.
Eleven attempts to close the gate she once opened. Joyce gives a last ditch attempt at saving her son.
The group are able to flee the Department of Energy. Only one of them won't make it.
Eleven tracks down her long lost sister, for better or worse.
Will's connection to the shadow monster is tearing him apart, but no one can help. Dustin and Steve prepare to battle Dart.
Jonathan and Nancy get in touch with Murray Bauman. Hooper's lost underneath Hawkins, as Joyce and Will try to save him.