From his first day on the job, Shinoda, a new history and geography professor at a night school, is scolded by his colleague, the strict math professor, Nakatsu. The two men have very different teaching methods, and their working relationship doesn't seem to be going well... But even though Professor Nakatsu seems to have forgotten this, he is also the man who gave Shinoda the motivation to become a professor. 予備校で社会を教える篠田千歳は、勤務初日から、鬼講師と評される数学担当の中津に生徒への接し方を注意される。理詰めで容赦のない中津。篠田はそんな中津の考え方や言い方につい反発してしまう。けれど、時に窮地を救ってくれる中津は篠田にとって憧れの存在でもあった。そして、気づかぬうちに中津への感情は変わり始めて!?