There was a time with DC ran so many stories, writers couldn’t even keep up with the origins of characters, or even there powers and so they sought out to iron-out some issues, which lead to the creation of a Crisis but that another story. In this case DC ask the ever popular Alan Moore, to write a story using the character.
Story: Superman long roster of villains are mostly dead or inactive, but when they all sudden gather together for one final confrontation, the Man of Steel has no other choice but to confront them in one final massive battle, that will result in heavy loses for both sides.
Art: When I first read this story I love the art, it seem just so familiar because it had being very commonplace in the DC books, were the color and shading seem very lively and the action very fluid. But as this booked aged and read a second time, my opinion of it change very much. The art seem dated, the color washed out and the movement static. Then read modern book with digital art, and seem wow, I am quite wrong! The art is good and the color are pastels but they are all hand not digital as today, which is one up on the art.
This image here is worth enough
For example in this one the character feel stiff, and the art feel horrible outdated
Dialogue: This is very moving comic, not just because of the struggles Superman goes through but because the problems he faces he does not deal in them in very heroic way, from his two lovers, never choosing and identity. This human struggles that even the greatest man could not overcome, however by no means is this dark negative story about how depressing life. No, it about humanism a character who could wrestle with black holes and fight alien gods, and taking him and remind us he can still feel.
There a lot of Golden Age references, but the most is that our heroes ready to fight for their greatest pal Superman
Another amazing peace of scene in which we see the courage the sacrifice
Continues in: Imaginary Tale
Conclusion: This is one of Moore’s finest story and possibly greatest one ever written for Superman. His work here inspire Neil Gaiman to write Whatever Happened to the Cape Crusader, Alex Ross even took few hints for Kingdom Come and sure Grant Morrison borrow quite a bit in order to write All-Star Superman, so can I interest you in the greatest story ever told of Superman? I do hope I can because change the way you see him.
Moore makes the Man of Tomorrow into real person with weakness and fears, with pain and hate and with more than that, with voice outside of his own. You must read to believe it.