The basic Voltron premise was to have standard villian create hair-brained scheme executed by horrifying giant monster/robot. Team Voltron goes off to fight this menace, nearly gets beaten, rises up again to heroic music, forms blazing sword, and lays the smack down - all while dealing with a touching interpersonal subplot. http://www.imdb.com/title/tt0113820/
Bad news folks. Voltron, the live-action movie has already been done. It's called Mighty Morphin' Power Rangers and if I'm not mistaken, we all hated it.