- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
A planet long dead and once was home to a highly advanced race with the power to exchange life-entities. Their ruins have long been studied by Federation scientists. In 2269, a Federation team headed by Dr. Janice Lester and Dr. Arthur Coleman was wiped out by Lester in order to keep the secret of the life-exchange project.