In the first season, the Byers’s youngest son, Will, disappeared without a trace. Will’s mother, Joyce, and the entire family, friends, and leader Will Hoann are searching for her and desperately trying to find Will. At the same time, strange things are happening all over the city. Other people also disappear without a trace.
A little girl named Elfie (Eleven) who has telekinetic skills suddenly appears and joins Will’s friends. It turns out that in the Hawkins lab, from which Elfie (Eleven) also left, there is a gateway that leads to another dimension. A monster called “Demogorgon” has emerged from this dimension. In the first season, however, factors and issues such as growing up, friendship, love affairs and high school dramas also play an important role.