With the crew exhausted and in need of rest and relaxation, the Enterprise travels back to the so-called "Shore Leave" planet, the site of a nearly disastrous encounter earlier in its five-year mission. But now that they know how the planet works, they should be able to relax and enjoy themselves this time around. But once again, that doesn't turn out to be the case, since the Keeper has long since died, allowing the planetary computer to take over and run amok. With Lt. Uhura being held captive and power being drained from the Enterprise, Captain Kirk must (once again) reason with a computer to release his ship and set his crew free. For fans of "The Original Series" episode "Shore Leave," "The Animated Series" provided them with another direct sequel to a beloved classic, albeit one that feels like too much of a retread. But "Once Upon a Planet" still has its merits, and like the episode that inspired it, it's a lot of fun.

Guest: Dusty Abell  -- Warner Bros. Animation Character Designer; Artist: "Star Trek: The Original Series -- 50th Anniversary Poster" (Art for purchase at www.DustyAbell.com)

Guest: Alex Ross -- Award-winning artist for Marvel, DC and beyond; Narrative art for "Spider-Man" and "Spider-Man 2" (Art for purchase at www.AlexRossArt.com)

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