对数字极其敏锐却因“衰神”体质没能当上刑警的一円，奉警视厅“削减开支”的特别命令，来到被戏称为包袱分局的万町署。无端毁损器物、与可疑线人的往来、用途不明的支出…面对坚持“没有钱没办法查案”、在金钱使用观念上却大有问题的刑警们，円该如何完成这项艰巨任务？有时是经费捍卫战的超烦敌人，有时却是以独到角度引导破案的超强队友，让人又爱又恨的“经费警察”登场！

接受警察組織經費削减的特別命令，被本廳派遣到轄區的特別會計一円所展開的故事。橋本環奈出演在數字有強大能力的主角一円背負着組織Tokumei的使命，作為緊縮決策的一部分，在被稱為警視廳轄區的萬町警察局進行經費削减測試。

경시청의 경비 삭감 명령을 받고 서에 파견된 특별 회계과 경찰관이 개성 넘치는 서의 형사들과 대립하고 협력하면서 사건을 해결하는 형사물

Hajime Madoka is a special accountant police officer, who has been dispatched from the central government office, to work at the local police station on a “special mission” in order to reduce expenditure as part of the austerity budget. Her meticulous personality and attention to detail means she doesn’t miss even the slightest discrepancies in numbers. Her various proposals to reduce expenses during the investigations causes chaos for the detectives as she tends to approach cases with the unusual mindset of “cutting costs” while reaching the same outcome.

経費削減の特別命令を受けて、とある警察署に派遣された警察官の一円(はじめまどか)。ひと癖もふた癖もある刑事たちと衝突しながら、円は警察署のお金の問題と事件を解決してゆく。