Infamous assassin Edmund Hughes is hired to kill a man. Shamed ex-Agent Nigel Reid will do everything in his power to stop that from happening.
The one marked for death, only known by the moniker of “Kagerō” proclaims his innocence despite the fact that he is carrying the formula for the newest kick on the streets. Hellseher is a dangerous drug monopolized by a large shadow organization and new player is trying to take over the distribution. Unwilling to let thousands of innocent people die in the inevitable drug war, Kagerō fights to stop spread of hellseher even at the risk of his own life.
Angry Germans, oversexed Frenchmen, a loudmouthed Goth teen, dark secrets, complicated genetics and simple human emotions make a mess of Kagerō’s mission to stop the spread of hellseher. And as his new partner comes to find, Kagerō himself is more of an addiction than any drug, one that cannot be resisted.