The first trailer for “Iron Man 3″ finds the Marvel franchise taking a dark turn. We hear Tony Stark (Robert Downey Jr.) complain about nightmares, as well as the constant unease he feels from knowing there are hundreds of people gunning for his head. He tells Pepper Potts (Gwyneth Paltrow), “I hope I can protect the one thing I can’t live without,” just before the scene cuts to a mysterious intruder in an Iron Man suit seemingly abducting Tony Stark’s beloved girl Friday. At least according to the trailer, director Shane Black has banished the lighthearted tone — and Tony Stark’s trademark snark — from the proceedings. Understandable, since the billionaire industrialist finds his world in rubbles at the hands of the Mandarin, played by Oscar winning British actor Ben Kingsley. Also starring Don Cheadle, Guy Pearce and Rebecca Hall, “Iron Man 3″ is scheduled to hit theaters on May 3rd. Check out the trailer below.