A world of women in the far distant future. Commander Wells and the crew of the Starship Argo continue their quest to find the Key to the Timegate. They seek the pirate woman named Nubia and her accomplice, a former member of the Dayimon Sisterhood. The Argonauts travel to the distant planets Nandel and Winterworld, where they visit mysterious lands populated by weird and wonderful aliens. They must locate the Key and return it to the Overlords. Whoever has the Key has control of the Timegate.