The evil Kirk leaves a trail of assaults and mayhem until confronted by the benign, yet passive Kirk, supported by Spock and McCoy. It seems that properties within the planet's ore caused the transporter accident, but that's not the only headache. With the transporter out of commission, a landing party is stranded on the surface.
Death looms large.
Unless the transporter can be repaired quickly, the mission team faces a night of lethal sub zero temperatures and Kirk's disparate selves will die unless reunited. Grace Lee Whitney as Yeoman Rand Jim Goodwin as Lt. John Farrell Edward Madden as Tech. NASA launched 5 different Gemini space missions in 1966.