AllMovie

On a distant planet, the Enterprise encounters a civilization that resembles a more technologically advanced version of the Roman Empire in this installment of the 1960s science fiction series. Captain Kirk, Mr. Spock and Dr. McCoy are investigating the planet, hoping to explain the disappearance of a lost starship, when they are captured. The three Enterprise officers are forced into a violent training program which will culminate in their service as gladiators in a public arena. Part Roman arena and part 20th-century football stadium, this arena features bloody battles broadcast on giant video screens. Kirk and the others must discover a way to escape their captivity, in the hope that they might be rescued by the Enterprise, before their battles -- particularly since their captors plan to force McCoy and Spock to battle to the death.