Big Duel for Lucky Yoriko

Chie Sagami-Ono, a former classmate from the police academy is determined to defeat the one person who prevented her from achieving greatness: the clueless Yoriko. Chie challenge Yoriko to a policewoman's duel, of which Miyuki and Natsumi gladly accept to protect their own pride. Will Yoriko be up for the battle, or is she clearly outclassed?