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With the help of the Vulcan leader T'Pau, Spock gets permission to use the Guardian of Forever, a portal through time constructed by a long-vanished race, to venture into the past. On another trip into history, on the planet Sarpeidon, Spock had loved a woman who could not return... Read Full Overview

The Romulans attack the planet Gateway, where Federation scientists are studying the Guardian of Forever -- the mysterious portal to the past. The Starship EnterpriseTrademark must protect the Guardian -- or destroy it. But Spock has already used the portal to journey to the... Read Full Overview