Sarutobi Asuma is a police inspector of international renown. When what was supposed to be a routine patrol goes horribly wrong and he is killed in action by a psychopath he had previously failed to capture, he leaves behind a pregnant wife and deep scars on the conscious of the three rookies that were with him on that night: Akimichi Choji, Yamanaka Ino, and Nara Shikamaru. Each of them copes differently with his death — while Choji retreats to try his luck in the family business, Ino shoots for the top of the world in the hell that is showbusiness. For his part, Shikamaru chooses to remain in the lawforce, eventually making his way into the secret services. Each of them have vowed to avenge the death of their teacher and protect the child and woman he left behind. A preexistent friendship that took root in their childhood and matured in their Academy days, now their bond has been sealed with blood and a dark promise.