Ep 9. Chapter Seventeen: The Lost Brother

Chapter Seventeen: The Lost Brother is the ninth and final episode of the second season of Stranger Things. In this episode, the gang splits up to complete their separate missions. Eleven sets out to find her lost "sister," Kali, and seek revenge on the men who wronged them in the past. Meanwhile, Hopper and Joyce team up to infiltrate the lab and shut down the gate once and for all.

Mike, Dustin, Lucas, and Max join forces to confront the Mind Flayer and save Eleven. However, their journey is not without obstacles and they face danger at every turn. Meanwhile, Steve and Nancy team up with Jonathan to expose the truth about Hawkins Lab and the cover-up surrounding Will's disappearance.

As the various plot lines converge, the gang comes face to face with their biggest threat yet. The Mind Flayer has transformed into an even more formidable opponent, and the safety of Hawkins is in jeopardy. With the fate of the town and their loved ones hanging in the balance, the gang must use all of their strength and courage to defeat the monster once and for all.

Chapter Seventeen: The Lost Brother delivers an action-packed and emotional finale to the second season of Stranger Things. The characters are forced to confront their deepest fears and overcome impossible odds to save their town and each other. With unexpected twists and turns, this episode is a thrilling and satisfying conclusion to the season.