Can the Narcotics Control Division save the streets from drugs' invisible threat?
Kai Eto may look like a squeaky clean kid, but the Greater Kanto Narcotics Control Division's new investigator hides a violent alter ego and a dangerous past. With his stoic partner Hal Kurabayashi, Kai is assigned to track down and stop the distribution of Dragon Speed, a dangerous new drug. But Ryugen, the syndicate trafficking the drug, is almost impossible to infiltrate. Add street violence and a jurisdiction war with the Meguro Police, and poor Kai is in for some very long days at the office.`
Hal survives an assassination attempt, but it seems he may not have been the target. Clues point to the "switch," but no one seems to know just what that means. The Ryugen, however, do know something and use that knowledge to entrap Kai and flip his switch.