“USS Callister” is the first episode of the fourth series Black Mirror. Written by series creator Charlie Brooker and William Bridges and directed by Toby Haynes.

The episode follows Robert Daly (Jesse Plemons), a reclusive but gifted programmer and co-founder of a popular immersive virtual reality-based massively multiplayer online game who is bitter over the lack of recognition of his position from his coworkers.

He takes out his frustrations by simulating a Star Trek–like space adventure within the game, using his co-workers’ DNA to create sapient digital clones of them. Acting as the captain of the USS Callister starship, Daly is able to order his co-workers around, bend them to his will, and mistreat them if they get out of line. When Daly brings newly hired Nanette Cole (Cristin Milioti) into his game, she encourages the other clones to revolt against Daly.