In a flashback to 1979, Dr. Brenner is experimenting on children with supernatural abilities until a mysterious incident kills all the children except Eleven. In 1986, eight months after the events at Starcourt Mall, Joyce, Will, Jonathan, and Eleven have moved to California, where Eleven struggles with the loss of her powers and is routinely bullied by other students. Joyce receives a porcelain doll in the mail, seemingly from Russia, and finds a hidden note stating that Jim Hopper is alive. In
Hopper survived the explosion beneath the Starcourt Mall, but was captured by Soviet soldiers and sent to a prison camp in Kamchatka. Joyce and Murray call the phone number listed on the note they sent him and speak to Dmitri Antonov, a prison guard Hopper has bribed. Antonov asks them to deliver a $40,000 ransom to his contact in Alaska. Mike flies to California to visit Eleven, where he and Will witness her classmate Angela bullying her; Eleven eventually retaliates by hitting Angela in the fa
Sam Owens is visited by U.S. Army Lieutenant Colonel Jack Sullivan, who believes Eleven is responsible for Chrissy's death. Eleven is arrested for assaulting Angela, but Owens takes her away, explaining that Hawkins is in grave danger and that he has been working on a program to help Eleven regain her powers. Eleven agrees to go with him. Joyce and Murray fly to Alaska to deliver Hopper's ransom. Hopper bribes a fellow inmate to break his shackles with a sledgehammer. Nancy and Robin go to the l
Joyce and Murray deliver the ransom payment to Antonov's contact, Yuri, but he drugs them and plans to hand them (and Hopper and Antonov) over to the Russians for a larger profit. Hopper escapes from the prison camp but is soon recaptured. Jonathan, Mike, and Will prepare to escape from Wallace and Harmon, agents sent by Owens to watch them, but armed soldiers attack the house. They escape with the help of Jonathan's friend Argyle, bringing the wounded Harmon with them. Nancy and Robin interview
Owens takes Eleven to an abandoned ICBM silo in Nevada, where he and Dr. Brenner have developed a specialized isolation tank (called "NINA") that will allow Eleven to access memories of her time with other kids at Hawkins Lab. After her first time in the tank, Eleven tries to escape and briefly regains her powers in the process, convincing her to continue the experiment. In California, before dying, Agent Harmon gives the kids a pen containing a phone number for Project NINA that connects to a m
Eleven relives memories of befriending a lab nurse, who warns her not to trust Brenner. She also recalls being threatened by other test subjects, leading her to believe she was responsible for the lab massacre. Suzie helps Mike's group locate the coordinates for Project NINA. Hopper and the other inmates are given a large feast, which Hopper attributes to the Russians preparing to feed them to the Demogorgon. He later manages to steal a lighter, remembering that the Demogorgon's weakness is fire
Joyce, Murray, and Yuri enter Kamchatka and witness Hopper and his fellow inmates fighting the Demogorgon. Hopper stops the creature with a flaming spear while Murray and Joyce subdue the guards and open the prison gates, allowing Hopper and Antonov to escape. Joyce and Hopper are reunited. Dustin, Lucas, and Erica theorize that Vecna has created a portal at the site of each murder, which they communicate to the older teens in the Upside Down. Both groups meet inside Eddie's trailer at the gate
Vecna shows Nancy, who is still possessed by him, a vision of the future in which Hawkins is torn apart by rifts before freeing her. The group determines that Vecna needs four portals to implement his plan; Max volunteers to lure Vecna into possessing her so the others can attack him while he's distracted. Eleven, using her powers, learns of this plan and gets Owens to arrange transit to Hawkins. However, Brenner betrays and secures Owens and traps Eleven, insisting she needs to complete her tra
The Hawkins group puts their plan into action: Max, Lucas, and Erica go to the Creel House while Steve, Nancy, and Robin go to its Upside Down counterpart to attack Vecna, with the bats being lured by Dustin and Eddie. Eddie sacrifices himself in the process. Eleven's group creates an isolation tank so she can enter Max's mind and fight Vecna. However, Vecna overwhelms her and possesses Max, revealing to Eleven that he has controlled the Upside Down since she sent him there. Mike professes his l