Momokichi Momoi, the mob boss owner of a professional baseball team known as "the Peach Twisters",  has a unique way of dealing with ineffective players: killing them. His daughter, Momomi,  is twice as twisted as her father. Mikura and the Danger Service Agency are hired by a mysterious  old man to kidnap Momokichi. But during that attempt they run afoul of Momomi. Before the resulting  firefight, Momokichi dies when his head falls on a ventilation pipe. Now Mikura and the D.S.A. have  to come up with a new plan before they end up as Momomi's next target.  Mikura, Kurokawa, and Harada are the three members of the Danger Service Agency (DSA).  Mikura is the brawn of the group, Harada is the brains, and Kurokawa is just a bitter  ex-cop who likes to think he's in charge. They'll take on any job as long as it involves  much danger and, of course, money. Their biggest case, however, could prove to be finding  out why someone wants Kurokawa assassinated.  The DSA's headquarters is an old red British double-decker bus that has been converted into living  quarters for the three main characters. It has been placed on the rooftop of a two-story building  which houses Mugiyama's barber shop on the ground floor. They drive an old-style pink Volkswagen Beetle.