The Disappearance of Will Byers: 12-year-old Will goes missing after a game of Dungeons & Dragons. He is trapped in a dark, toxic, and decayed alternate dimension known as the "Upside Down" while desperately trying to communicate with his frantic mother, Joyce.Enter Eleven: Will’s friends—Mike, Dustin, and Lucas—search the woods and find Eleven, a runaway girl with a shaved head and psychokinetic powers. She is actively being hunted by Dr. Martin Brenner and shady government agents from the Hawkins National Laboratory.The Search for the Truth:The Kids & Eleven: Eleven uses her powers to help the boys find Will. She eventually admits that she is the one who accidentally opened a dimensional gateway to the Upside Down, unleashing a predatory monster called the "Demogorgon" into their town.Joyce & Hopper: Joyce's son Will manages to manipulate the household Christmas lights to communicate, leading Chief of Police Jim Hopper to realize the government is running a sinister cover-up.Nancy, Jonathan & Steve: Mike's sister Nancy and Will's older brother Jonathan team up to hunt the Demogorgon after it kidnaps Nancy's best friend, Barb. They are aided at critical moments by Nancy's boyfriend, Steve Harrington.The Climax: Hopper and Joyce infiltrate the Hawkins Lab to rescue Will and navigate the Upside Down, finally bringing him back to the real world using CPR. At the same time, Eleven and the boys are cool