The "anything" consultation office of Suginami Chuo Police Precinct is a department to leave people who have got the boot for causing problems at various places. "Zero is zero no matter how you multiply it." That is to say, good-for-nothings are useless no matter how many people there are. They get ridiculed as the "Zero Section" and have to handle miscellaneous affairs such as annoying, trivial notifications, complaints, claims and troublesome disputes. At the section, the naive Kobayakawa Fuyuhiko, a career police officer from the National Research Institute of Police Science who cannot read situations, teams up with capable veteran detective Terada Torami who was thrown out of the Criminal Affairs Division for causing trouble all the time. Although they do not agree with each other, they take on all sorts of cases and chores with their good-for-nothing colleagues.