Contains spoilers for this episode and earlier episodes.
Patrick's death convinces Jason that Eddie has supernatural help rather than clearing his name. At a town meeting, Jason blames the Hellfire Club for satanic killings and urges residents to join the search. Eddie contacts Dustin from Skull Rock, where the others meet him. Dustin's compass points in the wrong direction, leading him to suspect that a nearby gate is interfering with it. Following the disturbance draws the group back toward Lovers Lake.
At NINA, Brenner asks Eleven to revisit memories she has suppressed. An orderly encourages her to remember her mother and warns that Brenner has lied to her. During a contest between the children, Eleven defeats Two, who later attacks her with other subjects when the cameras are off. The memories leave her believing she caused the massacre. Mike's group reaches Suzie's chaotic household and persuades her to trace the computer connection, giving them coordinates in Nevada.
Joyce and Murray force Yuri to help them reach the prison, planning to use him as their way inside. Hopper recognizes the prisoners' generous meal as preparation for their encounter with a Demogorgon. He provokes a disturbance to steal a lighter, knowing fire offers a defense. At the lake, Steve dives down and finds a gate on the bottom. After he returns to report it, a tendril drags him through. Nancy, Robin and Eddie follow him underwater while batlike creatures swarm Steve in the Upside Down.