Heres the simple version dumbass:
DISK 1:
>Shinra bad
>Aerith the last of an ancient race
>Sephiroth* is back and he's PISSED after being dead
>Follow Sephiroth* through Kalm, Junion, Costa del sol, Northern Corel, Golden Saucer, Cosmo Canyon, Nibelheim, Rocket Town and Finally the Temple of the ancients.
>Sephiroth wants to wound the shit out of the planet with a meteor cus he wants to become a god by absorbing the lifestream that'll try to repair the damage he's done to the planet.
>Get the black materia
>Sephiroth* steals the black materia
>Aerith goes to the Forgotten Capital to cast Holy
>Aerith fucking dies
DISK 2
>Northern Crater
>Get the black materia back
<Nah wait give it to sephiroth instead
>Sephiroth Summons Meteor
>Cloud has a mental breakdown
>Superbosses spawn on the map
>Cloud disappears from the party
>Wake up at Junion
>steal an airship
>Go to mideel
>Find cloud as a vegtable
>Get you some fuckin Huge Materia
>Cloud comes back
>Raid the shit out of Midgar
>Kill Hojo cus he just wants to power sephiroth up with a mako cannon cus his sperm made him
>Good Job team now figure out what you're fighting for
DISK 3
>Kill Sephiroth.