In season five of Star Trek: The Next Generation, nothing can be taken for granted in an ever-changing universe. Leonard Nimoy returns as the famous Vulcan Spock, who rocks the established order when he defiantly flies into Romulan territory. Bajoran Ensign Ro Laren is forced to protect the Cardassians who persecuted her people. Worf (Michael Dorn) learns what it means to be a father, Data (Brent Spiner) discovers the unexpected truth about a time-traveling historian, and Captain Jean-Luc Picard (Patrick Stewart) must confront a new and unexpected dimension of his greatest enemy, the Borg.