"Flashpoint" by Geoff Johns and Andy Kubert (2011)
Oh no! Barry Allen wakes up to find he's in an alternate timeline! And double oh no! He's lost his powers! And triple oh no! Aquaman and Wonder Woman are fighting some barely-explained war against each other! And quadruple oh no! This timeline is... EVIL!
At least it all works out in the end, thanks to - you guessed it - a little time travel on the Flash's part. GO FLASH! Thanks for making our timeline great again!
The story is fairly well thought out, even if the Atlantis/Themyscira subplot isn't explained to anyone's satisfaction. Superman acts as a kind of deus ex machina, and the story features a halfway interesting version of Captain Marvel/Captain Thunder/Shazam.
The art? It's alright, but kind of pose-y. Muscular dudes doing muscular things. Hot superheroines with gigantic knockers. You know the drill...
I realize that I'm coming at this one kind of late, but if it makes any difference I did see the animated version a lot closer to 2011. Having now read the comic, I'd have to say that the animated version tells the same story much better. If and when they ever manage to make that cinematic version of Flashpoint, they could do a lot worse than emulate the animated version.