This is actually the first film in the "Zero Woman" series. But it's the last to be released in America, and so was given the rather confusing subtitle "Final Mission". If you liked the others, you should like this one. I'd put it on a par with "Zero Woman" (which is actually "Zero Woman 2"; this is the original "Zero Woman"), and above the later ones. This was made before Naoko Iijima became famous (in Japan), and she's apparently embarrassed about it. It doesn't appear in any of her official filmographies...