In the Bermuda Triangle, after encountering a glowing green cloud, accompanied by the eerie disembodied sound of ship's bells, the group find themselves shipwrecked on a mysterious uncharted island from which they cannot escape.

A 23rd-century pacifist, musician and healer, Varian explains to the travelers that, like he and many before them, they have been caught in a space/time continuum where people from the past, present, future and from other worlds are trapped, co-existing on the island in a series of "Time Zones".

The show benefited from more location filming than usual, with familiar sites such as the Hollywood Hills, Zuma Beach, the Bonaventure Hotel in Los Angeles, and Griffith Observatory appearing in various episodes.

It was originally scheduled opposite The Waltons and Welcome Back, Kotter, both popular family series, as a midseason replacement for another failed fantasy show in that time slot, Gemini Man.

NBC would repeatedly preempt and move the series before finally giving up on it, after only ten of the twelve episodes that the network had ordered to follow the revised pilot had been produced.

[2] Within a few months of the abrupt end of production, several of the team that worked on the series would be producing the thematically similar Logan's Run for the 1977–1978 television season.

Guided to an old house by a mysterious mounted messenger, the travelers – minus Liana – quest for an object that will assist their search for Evoland, and a strange couple conjures illusions drawn from their deepest fears.