Mars Grill chronicles the adventures of the kitchen crew of Mars Grill, a greasy little space-diner on Phobos, moon of Mars. Shiz Paf and Lashky Hypotenuse are short-order cooks. The Molduronian, Grokk Jr, is the dishwasher along with his undocumented alien pal, Nachoberto, a Tarantulonian, and XJ-37, a robot, is the maitre-d.