 The Enterprise s sensor readings indicate a planet unsuitable for any contains carbon-based life at the level of a developed civilization. Suddenly they get an apparition in space from someone who looks like and claims to be Abraham Lincoln, insists to have his liveliness checked out on board from a small part on the planet which has a perfect atmosphere and is received with full presidential honors. Kirk and Spock accept to beam down with him, phasers and tricorder fail to dematerialize, communicators don t work. There they meet Surak, the greatest Vulcan of all time, equally convincing. The quartet is greeted by a creature consisting of molten rock, to be presented to notorious historical villains Ghengis Khan, Colonel Green, Zora and the Klingon Kahless the Unforgettable and told the teams representing good viz. evil must do battle to the death against each-other to help the creature decide about the concepts. When they refuse to continue after beating off a first traitorous attack, the creature ups the stake by causing a power disaster which will blow up the Enterprise in four hours unless they win...