I have a storyline now, and this is a summary:
Link from the past gets corrupted by Majora's Mask, which has been reconstructed.
The corrupted Link travels to the future to reak havoc on his descendants.
The legends of Hyrule have been long forgotten, and few even remember the hero of time.
You control the future Link, who, obviously, has to find the master sword and something else.
you have two friends who also carry the other two pieces of the Triforce within them.
Title is still getting figured out. Working the bugs out of the intro, then I'll get some more screens up and going.
UPDATE: Well, I've finalized the title...
The Legend of Zelda: War of the Corrupt