The Enterprise receives a message from the Sheliak, a race the Federation had not heard from in over 100 years. The Sheliak insist that a world in the Tau Cygna Five system is theirs and demand the immediate removal of humans from that system. The Enterprise does not believe that humans are on that planet due to the fact that the planet has extremely high radiation levels but travels there anyway only to discover a thriving civilization that refuses to evacuate the planet. Data has to convince the people of the planet to leave or be destroyed by the Sheliak.

Producers: Hans Beimler and Richard Manning
Director: Cliff Bole
Writer: Melinda M. Snodgrass

Guest Cast:

Eileen Seeley (Ardrian)
Mark L. Taylor (Haritath)
Richard Allen (Noe)
Mart McChesney (Sheliak)
Grainger Hines (Goshven)