Growing up ninja in a modern world with ancient customs is difficult, but the Japanese government still has need of them. Training in the Chaio village, home of the best ninja, Duncan Kimura dreams of one day being chosen for the elite special forces–the Black Dragon Squad. But his dreams won’t become a reality if he can’t control his destructive rage that threatens everyone around him.

Turmoil threatens to tip Duncan’s balanced world; rivalries, disputes with other teens, competition, and a beautiful kunoichi–a female ninja. The plague of emotions fuels his anger and an entity hidden deep inside him threatens to surface–it wants out.

The Chaio ninja are guardians of secret ancient artifacts that are of great interest to a mysterious foreigner who employs the help of a rival clan, the Shimoshuki, to steal them.

Only one ninja–a kunoichi–takes the mission, and she wants Duncan’s power for her own. She infiltrates the Chaio village alone and secretly threatens everyone close to Duncan. If he tells anyone about her, she vows to kill them. In return she wants his power and the secrets of the Chaio village.

Faced with a foe unlike any other, Duncan must overcome his own fears and the raging anger bursting within him to save the woman he loves from certain death. Follow him through his trials and challenges as he will either lose himself to his rage and become a threat to all he knows and loves, or triumph and become the ninja his people expect of him.