AllMovie

A false summons leads the Enterprise into an ambush in this episode of the original Star Trek television series. When Captain Kirk discovers the ambush, he orders a pursuit of the hostile alien battleship; during the ensuing battle, both ships cross the borders of the Metrons, an extremely powerful alien race. The Metrons take control of both vessels, and order the commanders of each ship to meet in physical, hand-to-hand combat. Soon, Kirk finds himself at the center of the Metrons' arena, facing his adversary, a Gorn -- an immensely strong, reptilian creature. The commanders are forced to do battle, with the prize being the destruction of the loser's starship.