Kazuma Kakimoto (Terunosuke Takezai) dreamed of becoming a CPA. After a long time of preparation for his CPA test, Kazuma finally becomes a CPA. On the first day of work, he is frustrated to learn a younger female CPA and college student Moemi Fujiwara (Saori Koide) is his boss. Moemi Fujiwara wears fancy clothes and carries herself in a bright fashion. Kazuma believes that is not the image a CPA should carry.

Eventually, Kazuma comes to respect Moemi after watching her solve corruption cases with her extensive knowledge of accounting. Kazuma even starts to model himself after Moemi.