When the lower decks decide to throw a synth-kegger, Burnham and Tyler share a moment. But when a giant space fish spits Harry Mudd onto the ship, The USS Discovery becomes trapped in a half-hour loop. It's now up to Stamets to float on a fourth dimensional mushroom to help save the day. Will the time-loop continue? How good is Tilly at beer pong? Ash and Michael, will they? won't they? It’s the episode where they didn’t call the Beastie Boys *or* French Stewart.