故事以加藤实秋的小说「Maison De Police」系列为原型，描绘了主人公新进刑警牧野ひより（高畑）来到了只有退休警察居住的共享房屋「Maison De Police」，被一群能力超群知识丰富前警察“大叔”们呼来喝去的同时，解决了一个又一个案件的故事。

Teiichi Akaba is a student at a prestigious private male high school known for producing important politicians and bureaucrats. His dream is to become the prime minster and make his own country. To help achieve his dream, he wants to become elected as his school's student council president. The elected student president receives privileges and a better chance for promotions later in the political & bureaucrat world. A power struggle takes place surrounding the student election.