Kashiwagi Natsuko est une nouvelle enquêtrice pour le compte d'une assurance. Elle possède un génie scientifique et une grande logique et est fanatique de la propreté. Tono Aki est elle-aussi une enquêtrice dans la même entreprise. Ancienne délinquante et ayant vécue dans la misère, elle est devenue pingre. Possédant une excellente mémoire et un instinct animal lui permettant de ressentir les arnaques à l'assurance. Natsuko et Aki font une étrange combinaison mais très efficace contre les escrocs les plus retords.

The Rinkaiji family, by all appearances, is a well-to-do Japanese family. The father, Nariyuki, works in an elite corporation, which gives his wife Yoshiko status in their suburban neighborhood. But the daughter Sugina, who herself has secretly stopped going to school because she is being bullied. One day, they discover that Nariyuki has quit his job. As Nariyuki decides to find a new job along with Sugina, Yoshiko, a firm believer in a life based on the company, soon finds her world falling apart.

An opportune salaryman moves his family into a model mansion for 12 months; unfortunately, they must allow prospective buyers to trek through their home during business hours.

Ryoko, a free-spirited 23-year-old woman, quits her job after being caught having an affair with a co-worker and finds herself on the street. She comes to Tokyo, relying on her aunt Moeko, a career woman who works as a manager at a major city bank. The two, who have completely different personalities, quarrel constantly whenever they see each other.

A juvenile delinquent code-named Saki Asamiya is taken in by the government and forced to fight crime to redeem her actions. She is sent to various high schools to infiltrate and neutralize gangs and other forms of crime as a police officer using her metal yo-yo badge as a weapon.