One of the priestesses escapes and sends word to her sister Sonja (Brigitte Nielsen) who has trained to be a great warrior. She sets out to destroy the talisman, teaming up with the warrior Kalidor (Arnold Schwarzenegger) who found her sister.
I've never watched this properly and I probably shouldn't have bothered.
Nielsen is terrible and makes Arnie look like Laurence Olivier. It's linear, simplistic and looks cheap with a small cast and handful of locations of variable quality.
In some ways it kind of channels Flash Gordon with gaudy costumes and an element of mad science to Gedren's retinue. There's an animatronic pet spider in her court for no obvious reason and at some point there's a fight with a mechanical fish monster.
The cast get herded from one set piece to another and it's all just so throwaway.
2/10 avoid, utter garbage.