A worried Mike decides to come clean to Hopper, and Dustin drags Steve into the H.I.C. Nikki welcomes Will to the mosh pit. Lucas and Max hit the arcade.

Lucas and Max seek higher ground to call in a Code Red. Across town, Will, Mike and Nikki are snowed in at school — and El can see they’re not…

With time running out, the party pulls together for a brave battle to stay alive. Friends have to help friends — because Hawkins’ future depends on it.