A young lady working for McCoy. Her role seems to be that of tricking girls and bringing them into a more vulnerable area so that they can easily be captured for his slave trade. Yuka easily falls for the ploy and is kidnapped by them. Sayaka is highly devoted to McCoy and appears to be involved with him, or just infatuated.

To the unsuspecting eye Maki, Reimi and Yuka may not look like ace crime fighters, which might explain why they're stuck on traffic patrol instead of more "exciting" police duties. 
All that changes when Yuka gets herself kidnapped by a white slave organization run by a politically connected businessman who's got the rest of the police cowed. 
Now it's up to Maki and Reimi to don skin-tight battle armor, liberate a tank, and make sure that a certain slaver learns that when you play with fire, you're going to get your ass burned! 
(Source: DVD Back Cover)