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.

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.

A manga adaptation (which had the full title, Mezzo Danger Service Agency) which covered all 13 episodes in 1 tankobõn volume, was released in April 2004, a month after the anime ended.