Assisted by the robot L (Judd Hamilton) - who speaks with a Southern drawl - their adventures take them from planet to planet, encountering Amazons with a giant robot and cavemen. The final showdown takes them into battle with Zarth to save the universe...
So, a deliciously cheesy romp with cardboard sets and dodgy special effects. The story shamelessly plunders Star Wars for inspiration (as well as a few other films, the Amazons' giant robot is straight out of Jason & the Argonauts for example). The dialogue is often ridiculously banal and awkward. The acting, indifferent. The result is, somehow, superb.