When a man by the name of "Kayama" (Shigemitsu Ogi) is suspected of being in charge of a smuggling operation, "Rei" (Saori Ono) is ordered to get close to him while her superiors gather enough evidence to form a course of action. In the process of doing that Rei encounters a jealous secretary and an unscrupulous associate of Kayama who wants Rei in the worst possible way. Along with that she still has other assignments she has to execute as well. Now as far as this film is concerned I will just say that--although it wasn't the best addition to the "Zero Woman" series-it wasn't exactly the worst either. Saori Ono performed creditably as the lead actress and the plot consisted of enough intrigue to keep things interesting. Likewise, not including any deviant sex scenes certainly didn't hurt either. One thing I didn't care for was the ending which left much to the imagination due to its ambiguous nature. Since there are a couple of films in the series after this one then I suppose everything will be cleared up in the next one. In any case, I thought that this was an okay film for the most part and I have rated it accordingly. Average.