Netflix dropped its first trailer Thursday for the new 'Black Mirror' movie. UpRoxx reports that the movie is said to contain five hours of footage and will allow users to choose between challenges, as a choose-your-own-adventure experience. The synopsis for 'Black Mirror: Bandersnatch' reads: ?In 1984, a young programmer begins to question reality. As he adapts a sprawling fantasy novel into a video game and soon faces a mind-mangling challenge. Welcome back.? The movie centers on an abandoned video game from the 1980s. 'Black Mirror: Bandersnatch' will be released on Netflix on December 28.