This is the unofficial sequel to the 1969 Western hit "Butch Cassidy and the Sundance Kid." It took 42 years, but it was worth it. Almost 20 years after Butch Cassidy was supposedly shot-down in Bolivia he is shown alive and well, living in a ranch house in the mountains under the name James Blackthorn (Sam Shepherd). He has a "nephew" (or, more likely, a son) in the USA and decides to take his stolen loot, retire there, and live happily ever after. Unfortunately for him, a young outlaw (Eduardo Noriega) puts the kibosh on his plans, but they eventually team-up, perhaps because the dude reminds him of his younger days or of his deceased best friend, the Sundance Kid.
Another reviewer pointed out that Butch Cassidy is essentially regarded as a real-life Western Robin Hood. Yes, he was an outlaw, but he stole from the rich (the banks, trains and such) and gave to… well, himself. Okay, so he wasn't exactly Robin Hood, but people give him a pass because he fought the system and won, at least until his reported death at the age of 42 in 1908. But there are theories and support for the idea that he didn't die and this movie explores this possibility.
The reason I bring up the whole Robin Hood ethic -- i.e. steal from the rich, etc. -- is that the movie illustrates that, outlaw though he may have been, even Butch Cassidy had an intrinsic moral code that he followed. Those who broke that code were not worthy of his time, respect or compassion. Period.
Another reviewer seemed to read too much into this element and interpreted the movie as a Socialist vehicle with didactic politics: The idea that being singularly rich is intrinsically evil and therefore those less fortunate are morally justified in demanding (i.e. stealing) their wealth. But I don't think the filmmakers necessarily support this view any more than the makers of the original movie did in 1969. It's basically just Butch's personal justification for his lifestyle. He's a thug who unsurprisingly made excuses for his foolish way of life and he keeps payin' the price: Everyone around him dies prematurely, he's left alone & weary, and his stolen loot seems to keep falling through his fingers, one way or another. Yeah, Karma's a real biyatch.
In addition to those intriguing ideas, this is just a solid modern Western with many of the requisite staples that mark the genre, such as excellent landscape cinematography (in this case Bolivia, shot on location), a quality modern Western score, shoot-outs, brooding outlaws, saloons, booze, posses, mines, escapes, beautiful women, Pinkertons, Natives, cowboys, horses and locomotives. Speaking of posses, the posse-pursuit in this film is at least twice as long as the elongated posse sequence in the original movie, and probably longer.