When ‘Thor: The Dark World‘ hits Blu-ray, DVD and 3D Combo Pack on February 25, Marvelites will be treated to an exclusive ‘Captain America 2‘ preview, which goes behind the scenes of Cap’s new venture to Washington, D.C. and will feature brand-new footage. Before you watch the featurette in the comfort of your own home, this highly anticipated look has made its way online. As Scarlett Johansson (reprising her role of Black Widow) says in the behind-the-scenes featurette (via CBM), Cap is entering a darker world with a more sinister threat. In ‘Captain America 2,’ Chris Evans‘ Steve Rogers (aka Captain America) is working for S.H.I.E.L.D. alongside Black Widow when he finds himself investigating a mysterious threat in D.C. There he meets the mysterious Agent Pierce (Robert Redford), the man who enlisted Nick Fury (Samuel L. Jackson) into the S.H.I.E.L.D. fold and who is more mysterious than he lets on. Not only that, but Sebastian Stan is back as Bucky Barnes, only this time he’s been brainwashed, given a similar serum that turned Steve Rogers into Captain America, and is now hellbent on defeating ‘The First Avenger.’ The new ‘Captain America 2′ preview also features new looks at Anthony Mackie, the newest superhero addition, as Falcon through a slew of behind-the-scenes footage from the set, as well as a new look at ‘Revenge‘ star Emily VanCamp as Agent 13. If the ‘Captain America 2′ Super Bowl trailer didn’t do it for yah, this preview with all its explosions, stunt work and cast interviews will surely get a rise. ‘Captain America 2′ hits theaters this April 4.