Benedict Cumberbatch plays the incredibly arrogant Doctor Steven Strange - very intelligent, an excellent doctor and a horrible person. Ten minutes into the movie he has a brutal car accident that damages his precious hands so he has the shakes and can never operate again. Looking for answers, he ends up in the East: from Kathmandu he finds his way to Kamar-Taj, where he learns from "The Ancient One" (Tilda Swinton). Instead of conquering his shakes as he'd hoped, he becomes a successful sorcerer. The villain is Kaecilius (Mads Mikkelsen, a good actor typecast as evil in English productions), a former student of The Ancient One who wants eternal life for everyone.
Cumberbatch is good as the titular character, and Swinton has a lot of fun as The Ancient One. The special effects are very good, and the movie is often goofy fun. I enjoyed it, but didn't think it holds up as well as the best of Marvel's movies. (Which would those be? I guess "Iron Man" and "The Avengers.")