I saw my brother at work!

Yeo-ju, a police officer by profession! She lives her life as usual, catching criminals, but someone gives her an extraordinary life: her younger brother, Jungkook! Jungkook, whose older sister ran away from home when he was young, has been living a difficult life. To protect himself, he decides to become a police officer and works tirelessly. He eventually becomes a police officer, and coincidentally, he ends up working at the same police station where Yeo-ju works.