After Mr. Spock sacrificed himself to save the starship Enterprise at the end of Star Trek II, Captain Kirk and his core team were determined to hunt through the universe to search for Spock, even though they could see only very little chance in finding him alive.
Depois de o Sr. Spock se sacrificar para salvar a nave estelar Enterprise no final do Star Trek II, o capitão Kirk e a sua equipa principal estavam determinados a percorrer o Universo à procura de Spock, embora vendo apenas uma pequena hipótese de o encontrar vivo.