In the early days of Stranger Things, it was easy to keep up with the show's mythology, but as the show's popularity grew, the mythology created by the Duffer Brothers expanded to include comic books, novels, and stage plays. Now, the first official TV series spin-off from the original show, Stranger Things: Tales from '85, will explore all-new elements of the franchise, with the show set between the events of Seasons 2 and 3. Before the show has even premiered, the first trailers have sparked speculation about the show retconning elements of the original series, as this footage shows remarkable events not addressed anywhere else in the franchise.