The movie follows Dr. Stephen Strange (Cumberbatch), whose journey begins when his hands are ruined in a devastating car accident. After exhausting all medical possibilities for mending his damaged hands, the famed surgeon flies to Nepal looking for a more exotic option -- which he finds in the form of The Ancient One (Tilda Swinton), a mystical mentor.
Under her tutelage, Strange learns of multiple universes and supernatural powers and in the process becomes a target for those who want to abuse magic for evil purposes.
"There's a lot of real-world live action in this film, there's a lot of drama, a lot of comedy, but there's also the most extraordinary, fantastical adventure," Cumberbatch explained in a behind-the-scenes clip. "I think it's going to be a great cinematic ride."