aka Stella Star
How bad is it? It's a low-budget Star Wars clone from Italy.
Should you see it? Yes, for the cast.
Emperor Christopher Plummer is under attack by Joe Spinnell and his forces, so he sends Caroline Munro, a robot and an alien (played by Marjoe Gortner) to intercede. The special effects are surprisingly good (though unbelievably cheap) and the film is awash in psychedelic garish colors, making it interesting visually, if not interesting mentally. It's like a 1930's serial in tone, with no logic at times. I like that Spinnell at one point gives a deadline of sundown - in space, not near a star.