A sci-fi comedy, Grunt RX-10 is a story of a neurotic machine who is so depressed by being a metallic item without a soul he becomes a renegade in the world of machines. While escaping the High computer's servants, he snatches a female machine and looks forward to interconnecting the fuel tanks when something goes terribly wrong. After they have both been killed few times by a bored Author, a group of mad exorcists imprison them in human bodies. Both of the desperate machines then have to face the absurdity of life when, being former machines, they are forced earn their daily bread by burying dead humans.