Enik explains that like the Marshalls, he has fallen through a "dimensional doorway" into the past of the Land of the Lost, and that the Sleestak are his evolutionary antecedents.

In dismay, Enik explains that he has a smaller Mageti stone (a "fourth dimensional node"), but that it requires a power source to operate.

On the way to the Lost City, a group of Sleestak attack the party, and Enik is unable to understand his ancestors' behavior (since future Altrusians always keep their emotions in check).

Upon seeing the ruins, Enik realizes that he has not, in fact, traveled to the past, but rather to the distant future, and that the Sleestak are the barbaric descendants of the Altrusians.

Premium Hollywood went on to describe the episode as notably deeper, more complex, and more philosophical than those previous, with "hefty ideas on display."

[1] In Sid and Marty Krofft: A Critical Study of Saturday Morning Children's Television, 1969-1993, film and television historian Hal Erickson calls this episode "superb" and praises it for the introduction of the character of Enik, whom Erickson describes as "the series' most fascinating character — and the one closest to the Star Trek brand of cerebral science-fiction/fantasy.