Lore is controlling Data to force him to assist him and the Borg in destroying the Federation. Captured by the Borg, Picard, Geordi and Troi seek a way to reactivate Data's ethical program. Meanwhile, the Enterprise, under the command of Dr. Crusher, is under attack by a Borg ship.

Patrick Stewart (Capt. Jean-Luc Picard)
Jonathan Frakes (Cmdr. William Riker)
LeVar Burton (Lt. Cmdr. Geordi La Forge)
Michael Dorn (Lieutenant Worf)
Gates McFadden (Dr. Beverly Crusher)
Marina Sirtis (Lt. Cmdr. Deanna Troi)
Brent Spiner (Lt. Commander Data)

Brent Spiner (Lore)
Jonathan Del Arco (Hugh)
Alex Datcher (Ensign Taitt)
James Horan (Lt. Barnaby)
Brian Cousins (Crosis)
Benito Martinez (Transporter Tech Salazar)
Michael Reilly Burke (Goval)

• Riker and Worf find Hugh, who is bitter and angry and blames the Enterprise for allowing Lore to control the Borg. (Hugh was rescued by the Enterprise in the epsiode "I, Borg".)
  
• Dr. Crusher uses the metaphasic shield created by Dr. Reyga in the episode "Suspicions". In the same episode, James Horan (Barnaby) played Dr. Jo'Bril.
  
• Lore stole Data's emotion chip in the 4th season episode "Brothers". Data will finally install the emotion chip in the motion picture Star Trek: Generations.
  
• Since they can't rejoin the Borg Collective, the renegade Borg remain on the planet as individuals trying to work together, with Hugh as their leader.