Ten performers improvise a long-form montage inspired by the original Star Trek series. Under Jack Bronis's direction the show is neither spoof nor impersonation: the cast wear the correct monochromatic outfits and reference teleporters, replicators, and phasers, but nobody lampoons Kirk or Spock. Here theme becomes form, producing mutinies, Klingon-esque villains, and intraship romances. With this large, mostly talented cast, the momentum swings wildly from scene to scene, but some nice musical touches--like spacey keyboard sounds--help bind the bits together. Trekkies seeking a fresh outlet should enjoy the show, though it's not quite funny or kitschy enough to incite its own cult following. Too bad that the brazenly quotidian Cesar Jaime, who's focused on sandwiches and bathroom breaks, is underused. Through 6/3: Sat 10:30 PM, Second City Training Center, Donny's Skybox Studio, Piper's Alley, 1608 N. Wells (fourth floor), 312-337-3992, $10.