What is Final Fantasy 8 about?

Depends on how deep a level you want. On the top level, its about a guy, who is "emo" anti-social for reasons explained towards the middle of the game. He is a mercenary, trained to be one, and goes on missions. Then he gets dragged into something of a much larger scale. Like all FF, its about him saving the world with his friends. Any more would spoil the game.