The Millionaire Detective – Balance: Unlimited Daisuke Kanbe, a detective with extraordinary assets, is assigned to the Modern Crime Prevention Headquarters, where only those who have caused problems for the Metropolitan Police Department are sent. There, Daisuke is partnered with Haru Katou. Haru is repulsed by Daisuke's material ways, believing that money isn't everything. Challenging mysteries unfold in front of the two detectives, and they must work together to solve them.