Netflix has released the first teaser for the Stranger Things spinoff. His plot will develop in the 50s Netflix has officially announced a spin-off of Stranger Things called Other Worlds. Its events will take place 30 years before Stranger Things and two years before the Nevada Experiment in the Broadway production of The First Shadow. According to the Duffer brothers, they came up with the idea for this project after the release of the fourth season in the summer of 2022. Matt Duffer has previously said that the new series will explain the origin of the stone that young Henry Creel (later Veken) finds in a scientist's bag in a cave. The premiere is planned for 2028. Video: Netflix.