Leo Wong - much to the dismay of the Eco-Feminists - gets rid of what nature there is left on Mars in order to build a new "Mars Vegas". While business is seemingly going well, Leo sets his sight on something bigger: a galactic-scale miniature golf course. Of course, this requires some more nature removing. The threat of a whole arm of the galaxy being turned into a black hole ball return causes the Eco-Feminists' ranks to swell. However, darker forces than Leo Wong are at work and a secret society tasks Fry with protecting the universe.