The Gamesters of Triskelion
Summary
Captain Kirk, Chekov and Uhura are kidnapped by powerful disembodied aliens and forced to fight in gladiatorial contests for the aliens' gambling entertainment. While trying to beam down to planet Gamma 2, Kirk, Uhura and Chekov are transported to a mysterious planet, Triskelion, that has never been mapped by the Federation. There, the three of them are captured and trained in fighting skills by trainers called Thralls. Any act of disobedience is met with pain through collars around their necks. The Enterprise, now commanded by Spock, leaves the Gamma 2 system and finds a hydrogen cloud with mysterious energy fields. On Triskelion, Kirk manages to impress the Providers and bonds with his Thrall to learn more about the Providers. While trying to run away, the Providers show their true selves and wager a deal with Kirk for one last fight between Kirk and three Thralls.
Summary from Wikipedia, CC BY-SA 4.0.
Find out more
These links open the services in a new tab with the question pre-filled; the AI assistants may ask you to sign in. Their answers can contain errors.