There sure will be a lot of characters and subplots in the next Captain America movie
Though the next Captain America movie will be subtitled The Winter Soldier, it does not concern Chris Evans' displaced WWII-era superhero retreating to a snow-blanketed cabin, contemplating the stillness with nothing but a fleece pullover and some Robert Frost poems. As that would make for a rather dull superhero film, there will be other characters in it—most obviously Sebastian Stan's Bucky Barnes, confirmed by Variety to reprise the role of the sidekick-turned-titular-Winter Soldier alongside (as recently rumored) Scarlett Johansson's Black Widow, plus Cobie Smulders' S.H.I.E.L.D. Agent Maria Hill and, of course, Samuel L. Jackson's Nick Fury, whose participation is required for this to be a Marvel movie, or even just a movie.