Second series of the spin-off sci-fi television drama set a decade prior to events in the original Star Trek series. The show follows the missions and adventures of the crew aboard the USS Discovery as they navigate the ongoing war between the Klingons and the United Federation of Planets. In this season, the Discovery receives a distress call from the Enterprise, Spock admits himself to a psychiatric facility and Burnham attempts to use dark matter to rid Tilly of a parasite.