Koji and Tatsuya, both from the Nerima Juvenile Classification Home, make money by committing bank transfer fraud. However, their lives are put in danger when the boss of a larger organization takes out an insurance policy on them. The duo flee to Tatsuya's hometown of Nagasaki, but there, they also get caught up in trouble with the local yakuza.

Yōsuke Kenjō, an eccentric detective from Ise Police, deals with repeat offenders. He’s called in to investigate a series of brutal murders of women with criminal records. The victims are found naked, with scattered photos and a 15-digit number printed on an "ear tag", a cattle identification tag. Frustrated by the lack of leads, Kenjō investigates on his own and uncovers a connection to cell phones.