Writer: David Gerrold
Captain James T. Kirk: William Shatner
Commander Spock: Leonard Nimoy
Dr. Leonard McCoy: De Forest Kelley
Lieutenant Commander Montgomery Scott: James Doohan
The Enterprise is being visited by the Pandronian commander Ari Bn Bem, who is an independent observer. He accompanies a landing party on a mission on Delta Theta III, a newly discovered planet, but, instead of observing, he interferes with the mission.
Before long, Kirk and his people are captured. Then they encounter a powerful alien entity who insists in achieving that they leave the planet.
Kirk persuades Bem to come back with them making him aware of the danger he had put everyone in. All are allowed to leave again.