A Federation mission to the planet Ba'ku takes a dangerous turn when a malfunctioning android, Data (Brent Spiner), takes a cultural task force hostage. When Capt. Picard (Patrick Stewart) and his crew investigate, they uncover the truth about the Federation mission: It was actually a systematic ploy by the Son'a to displace the peaceful inhabitants of Ba'ku. Now Picard and his crew must thwart the plot even while experiencing strange side effects from exposure to the planet's surface.