Sheldon Candis's new movie, "Luv," tells the story of a young boy's relationship with his uncle through the course of a day in Baltimore. Parallels with "The Wire" are inevitable, as the television show has, for better or worse, defined "Baltimore" for the outside world. "Luv" explores similar themes, and the director also manages a large and talented ensemble (Danny Glover, Dennis Haysbert, Charles S.