In the riot-torn 1960's Tokyo of an alternate history... a special police force, the Capitol Police Organization (CAPO) has been formed. Within CAPO is the special unit that gets the toughest jobs. Some of the men in the unit, according to rumour, comprise a vigilante group called the Wolf Brigade. Fuse, a member of the special unit, broods obsessively about a terrorist girl who blew herself up in front of him. Then he meets the girl's sister and becomes emotionally involved...