 Sometime in the future, the world is a mostly dead place as a result of the Shinra Corporation s using nuclear reactors to literally drain the life out of the planet. In the mist of the establishment of a new reactor, a group of terrorists called Avalanche get the assistance of a mercenary named Cloud, a former soldier of Shinra s army, to help them sabotage reactors. Soon, however, what everyone thought was a simple series of sabotage missions becomes a race to save the planet from Sephiroth. Sephiroth was the greatest fighter ever to work for the Shinra army, but diappeared under mysterious circumstances and was declared dead. Now he has returned, and wants to kill anyone possible as a "punishment" for the fact he was genetically engineered and has no true right to be alive natrually. As Sephiroth s murderous rampage continues, Cloud must not only prevent the downfall of man, but also come to terms with his own humantiy.