The Story:
Cloud Strife, the main character, is trying to remember his past and defeat the villian, Sephiroth, from destroying the world. And his eight friends will help him accomplish this. But Shinra is in his way of doing this stilling Aeris from his group cause she is the
last of the Anceints. She sacrifices herself to help the group.
More...
A huge political powerhouse known as ShinRa, inc., is a multi-billion dollar corporation using eight, highly sopisticated Mako  reactors to extract a powerful liquid known as the "Life-Stream" from the planet, further condensing it into a magical substance
called "Materia". ShinRa uses it for their further monopolization of Midgar. But a rebel organization known as "Avalanche" is fed  up with the monstrosities of the ShinRa, and they want it stopped at all costs and will go to every length to see it through.

Stories:

Story I
Story II