A mysterious force causes the crew of the Enterprise to lose their memories of who they are, where they are and what their mission is. They soon come to believe that they have been ordered to penetrate into the heart of the Lysian system and to destroy them. As they struggle to regain their lost memories, they struggle against the moral conflict of totally destroying a race that clearly is not their technological equal.

Producers: David Livingston, Herbert J. Wright
Teleplay: Barry Schkolnick
Story: Paul Schiffer
Director: Les Landau

Guest Cast:

Erich Anderson (MacDuff)
Michelle Forbes (Ensign Ro)
Liz Vassey (Kristin)
Erick Weiss (Crewman)