The Original Star Trek Adventure That Started the Enduring Sci-Fi Pop Culture Phenomenon. The Classic Series Focuses on the 23rd Century Adventures of Captain James T. Kirk, Mr. Spock, and the Crew of the U.S.S. Enterprise, a Powerful Interstellar Spacecraft Dispatched By Earth-Based Starfleet Command to Explore the Galaxy. Kirk Commands a Large Crew of Men and Women Aboard the Starship, Which Can Travel at Speeds Surpassing the Speed of Light. Their Five-Year Mission with a Mandate from Starfleet Is to Seek Out New Life and New Civilizations, and to Boldly Go Where No Man Has Gone Before. Fan Favorite Episodes from Season 3 Include Spock's Brain, the Tholian Web, Where Kirk Becomes Trapped Between Universes, Plato's Stepchildren, Featuring the Unforgettable Kiss Between Kirk and Uhura, and the Savage Curtain, Where Spock and Kirk Are Forced Into a Contest of Good Vs. Evil.