The story in FFIV was simple stunning, it took characters and showed how fragile they could be, showed that there is evil in even the purest.
The story began with Cecil as a murderus dark knight and ended with him as a Pure Paladin.
More then that and I am ruining a great game.
Like Pharoh said(but alittle blunter), shut up, go to your local game place, buy Final Fantasy Cronicles, and Anthology, do not think about how "This game can't be any better then these" while playing them, and then think.
Chris asking us to explain them is stupid. Even if I gave you the most detailed touching storyline, you want to believe it isn't as good therefore you'd say FFVII is better.
