This Georges Méliès film, "The Chimney Sweep," doesn't make much sense by itself. Richard Abel in his book "The Ciné Goes to Town" suggests that it and another Méliès short from 1906, "A Desperate Crime," were imitations of Pathé's dramatic and realist films. In trying to make sense of "The Chimney Sweep," he also suggests that it "could be said to follow the bricolage model of combining several different genres into a single format, perhaps explicitly for an audience of children."
This sheds some light on why the film begins as a fantasy--the dream of a child chimney sweep wishing to be rich--then, goes into a narrative of the boy trying to fulfill his wish by stealing a box of treasure, and ends like a comedic chase film. Another word for this, however, is that it's a mess. It's interesting to speculate how something such as this might've not seemed like such a disorganized hodgepodge to nickelodeon audiences already accustomed to seeing programs of short films from different genres back to back. Surely, it was also this booming nickelodeon market that encouraged Méliès to start making subjects in various genres at this later stage in his career, as opposed to focusing almost exclusively on trick films and féeries (fairy films) in earlier years.