The 21st episode of the animated Star Trek airs on NBC. 
Stardate 6063.4: Kirk and his crew are trying to pinpoint the origin of a vessel which recently scanned Earth’s solar system and then transmitted its finds toward unknown coordinates with a very powerful signal. But before the crew even expects to find an answer to this puzzle, an unidentified ship approaches, trapping the Enterprise in an energy field and kidnapping four officers including Kirk. The being aboard the vessel claims to be Kulkukan, a godlike creature from ancient Aztec legend – and at the moment, a rather angry one, since no one on Earth has worshipped him in many centuries. The creature challenges Kirk and the others to a test of logic. The prize if the humans win is the gift of Kulkukan’s boundless knowledge – and if they lose, the punishment is death for the entire crew of the Enterprise.
written by Russell Bates and David Wise
directed by Hal Sutherland
music by Yvette Blais & Jeff MichaelCast: William Shatner (Captain Kirk), Leonard Nimoy (Mr. Spock), DeForest Kelley (Dr. McCoy), James Doohan (Mr. Scott), George Takei (Lt. Sulu), Nichelle Nichols (Lt. Uhura), James Doohan (Scotty / Ensign Walking Bear / Lt. Arex / Kulkukan), Majel Barrett (Nurse Chapel)
LogBook entry by Earl Green