In Stranger Things Season 2, Episode 3, titled "The Pollywog," Dustin discovers a strange creature he dubs a "pollywog" and decides to keep it as a pet, unaware of its potential danger.
Meanwhile, Eleven, struggling with her isolation, ventures out to find Mike, leading to tension as Hopper tries to keep her hidden.
Will continues to experience disturbing visions tied to the Upside Down, prompting Joyce and the group to investigate further, while Nancy and Jonathan seek justice for Barb by pursuing a risky plan to expose Hawkins Lab.
In Episode 4, "Will the Wise," Will’s condition worsens as his connection to the shadow monster deepens, revealing cryptic drawings that hint at a larger threat.
Dustin’s pet grows rapidly, raising alarm, while Hopper uncovers a mysterious tunnel system beneath Hawkins linked to the lab’s experiments.
Eleven, feeling betrayed after a confrontation with Hopper, decides to search for answers about her past, setting her on a path of self-discovery as the group grapples with escalating supernatural forces.