Kim Seolhyun is the new and enthusiastic cop in the Seoul Metropolitan Police Agency. Although she is still young, Seolhyun is always up for a challenge to prove herself worthy of being in the force. Meanwhile in the streets of Seoul lurks the famed thief nicknamed 'Black Cat'. The infamous thief is none other than the charming and dangerously gorgeous Shin Hyejeong, The young officer hopes to impress her superiors by catching Hyejeong. However in a terribly wonderful turn of events, Hyejeong steals the best prize so far, Seolhyun's heart.

Characters

Kim Seolhyun- 21. She comes from a family of police officers. Outgoing, friendly and has a strong sense of justice.

Shin Hyejeong- 23. She has a troubled past and eventually learned how to steal to survive. Playful, arrogant and thinks only about herself.

Kwon Mina- 23. Hyejeong's only friend and roommate. She covers for Hyejeong when she leaves to steal.

Seo Yuna- 25. Senior inspector of SMPA. She is kind but, like Seolhyun, has a strong sense of justice.