Character of poor or even modest economic standing becomes wealthy and successful. Can be the gimmick of an entire series, or the plot of a single episode.
Could also be the backstory of a wealthy character- explaining why he acts the way he does. Such as explaining why a wealthy man is so frugal (i.e. cheap), or explaining why he feels more at home among the poorer class.
Originating in the 18th [...] [tvtropes.org]