And look what's become of the clear-cut Star Wars mythos: instead of the Force—a powerful, nurturing energy that animates all living things—we have the Sauce. Instead of a life-giving and sustaining element of nature, we have a condiment for space pigs who would rather die than live.
We assume that the two characters—let's call them, oh… Luke Swinewalker and Boarth Vader (or, no, let's not)—are fighting for possession of R2-BQ. So that he might cook them. Whereupon they will be eaten by jawas. Or whatever.
Addendum: For more sci-fi monkey business, see this previous post.