Please Help!!

I had a recording of a cartoon video a while back. And I would really like to find this movie again.

The only thing I can remember is that its about a boy, wich I believe was blind, and lived/worked under ground.
Humans where slaves to robots.
Someone, (I believe it was the boy) was crying out for water somewhere in the movie...water! water! and so on....
Somewhere he found a sword...a broken sword...i think....and found som friends and started a rebelion towards the robots.

This is just fragments of what i remember, but it would do so much for me if someone couls tell me what this is!!?!?!?

Note: "This is not necesseraly anime, Accually I don't think it is but I did'nt find a better place to post this thread"

PLEAS HELP!

\Marcus