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. When Kai goes undercover with Section 2, he falls into real danger when he is separated from the rest of the unit. He ends up in dark room full of suspicious characters, one of whom has the brand of a Ryugen slave. Now Section 2 must race to find him before it's too late.