It’s foam and darkness—but, as with every Henson project, all in the spirit of showing people some light. Grillo-Marxuach says all the writers signed their names to a card promising one theme: “This isn’t a show about winning wars, it’s a defense of the moral high ground.” Imbued with Henson spirit (and, sure, a dash of modern tech), the highest ground may well be just four feet off the floor.