Hannah is an attractive young writer for a TV sketch-comedy show; the stairs are the men who want her, though it’s unclear whether they’re leading her up or down. Written and directed by Joe Swanberg, this locally shot indie inhabits the same milieu of uncombed, postcollegiate white kids as the movies of Andrew Bujalski (Mutual Appreciation), though it lacks his dry social satire. The characters are educated enough to have a polished sense of irony but too young to recognize their own self-absorption. “Forty is the new thirty,” observes one, parroting a popular insight, and it’s hard to watch this without also concluding that 25 is the new 15. With Greta Gerwig, Kent Osborne, and Bujalski, all of whom receive writing credit.