Cold War NYC, 1985-ish.
A world of mostly-non-powered superheroism with a few exceptions and some old skeletons in the closet but a while back, costumed vigilantism was cracked down on hardcore... most of them retired, a few stayed on in government service and one, just one, went rogue and kept up the good fight. The way the retirements went down left a lot of the former heroes with awkward kind of unfulfilled lives but whatever. They deal.
Absolute height of the fears of atomic war and a world of despair where quite literally all the heroes are gone... quietly, secretly, former heroes (most of them surprisingly subtle pastiches of superheroes both major and obscure) start getting killed off one by one.
Pressure builds for them all to kind of "get the band back together" to figure out who's gunning for them and... as it does... it starts to seem like maybe it's part of a much larger scheme than just killing off vigilantes who've been on the shelf for fifteen years.
It is hard to say if you should pick up the graphic novel beforehand.
If the movie turns out to be good, then... no, so it isn't spoiled.
If the movie turns out to be bad, then... yes, so that the movie still kind of makes sense.
The big problem with "Watchmen" is that it is such a large dense work... and so many aspects are married in symbolism and structure to the exploration of the medium of comic books... that it conceptually difficult to picture it as a two-two-and-a-half hour movie, no matter how talented the filmmakers or true the adaptation.
Even if it were a six hour animated mini-series on HBO, you'd still feel like something was lost in the medium change because... it is so much an exploration of the medium.
I mean, why did the adaptation of "Breakfast of Champions" suck so bad? Because the book itself is a deconstruction of the 1970s middlebrow novel... and when you put that into a film, a whole layer of meaning drops out no matter what you do.
I mean, that famous painting of a pipe, right? "Ce n'est pas une pipe". Because... it ain't a pipe, it's just a drawing of a pipe?
See how expressing that in a messageboard posting just fuck*ng obliterated the value of it even though I expressed all of its literal information?
Yeah.
This is the ultimate fear with "Watchmen".