One switch. Two futures. One impossible choice. In William Tenn's razor‑sharp, satirical time‑travel classic, Max Alben and his near‑double, Mac Albin, rocket through the gray between moments to a 1976 missile test-each sent to flip the same red toggle in opposite directions. In one 2089, the Blight has devoured Earth's food supply and black‑market kings rule by hunger. In the other, a sterilizing epidemic has left humanity cushioned, coddled-and slowly dying out. What follows is a breathless duel of destinies where hunger battles sterility, freedom collides with safety, and a single "flick!" can erase an entire world. Jason Michael Mann's vivid performance draws out Tenn's wit and tension-gritty and desperate on one side, cool and clinical on the other-until a paradox‑charged finale snaps into place. Perfect for fans of mind‑bending time travel, moral dilemmas, and classic mid‑century SF that still hits like a shockwave.