When a precursor to the Argus Array gets a hole poked in it, the Federation sends its B-team: the USS SHEzhou. But when executive officer Michael Burnham pokes a hole in a nearby Klingon, the situation escalates quickly. Is Sarek the only Vulcan teacher? Has Georgiou given Burnham too much latitude? Is Saru the COB of this episode? It’s the episode that lights a beacon that can be seen across the galaxy.