“Omega” is one of those more-interesting-than-usual installments of the 1970s Filmation Saturday morning series Ark II.
The reason that this episode is more intriguing than most segments is that it -- like “Robot” or “The Lottery” -- features a specific science fiction concept other than just the one featured in the premise; that of a post-apocalyptic world. In this case, that concept is a villainous, sentient super-computer, a Colossus for the Saturday morning set.
As the episode begins, a kindly grandfather (played by Harry Townes), realizes that his daughter Diana, portrayed by a very young Helen Hunt, is now under the control of Omega. Thus, Jonah and his team set out to de-activate the machine and free her from machine enslavement. Unfortunately, Omega proves so powerful that Samuel begins to fall prey to its commands too. He rejects Jonah as leader and serves Omega instead.
After the computer is defeated, Jonah notes that Omega will never again be able to impose “de-humanizing ideas” upon mankind. Specifically, he’s referring to the idea that Omega has made all the elders of the local village the slave to youngsters, like Diana. As Omega reports early on, “young minds are quicker” to accept him.