Debutante Detective Corps begins with introductions to the five main characters, Miyuki, Reika, Youko, Nina, and Kimiko. It seems these five girls are incredibly rich and have been sent a threatening video tape by forces unknown. A police guard is set up at the school where the girls have enrolled. Kimiko, however, doesn't like the idea of being cooped up at school, and convinces the rest of the girls to trick the po...