Detective Keita Kurokouchi continues to extort money from politicians from whom Keita Kurokouchi has information. By using his information, he is able to crack unsolved cases. Rookie Detective Mayo Seike is excellent at her job and also a bit naive. She conducts an internal investigation on Detective Keita Kurokouchi, but they become partners and work on cases together. ~~ Adapted from the manga series "Kurokouchi (クロコーチ) written by Richard Woo (リチャード・ウー) and illustrated by Kono Koji (コウノコウジ).