S3E8 · Chapter Eight: The Battle of Starcourt

Complete story — includes the ending

Eleven rids herself of the piece of the Mind Flayer embedded in her wound, rendering her powerless. Hopper's group arrives, and plans are made to take Eleven's group to safety. At the same time, Hopper, Joyce, and Murray destroy the machine, with Dustin and Erica navigating them from his radio tower. Billy and the Mind Flayer trap Eleven's group at the mall. The others attack the Mind Flayer with fireworks as Eleven frees Billy from its control. Billy sacrifices himself to protect Eleven, Mike, and Max. Hopper fights and kills Grigori, getting trapped with the machine in the process. Out of time, Joyce is forced to trigger an explosion, closing the gate, with Hopper seemingly being disintegrated in the process. The Mind Flayer's physical body dies as Dr. Owens arrives with military forces. Three months later, the deaths are covered up, Starcourt is dismantled, and a disgraced Kline is arrested. The Byers family and a still-powerless Eleven prepare to move out of Hawkins. Eleven confesses her love for Mike and they make plans to meet at Thanksgiving. In Kamchatka, Russian guards are instructed to feed a prisoner, but "not the American", to a captured Demogorgon.