While looking for a job, Min-hee lands a position as a secretary in a detective's office. However, she doesn't have much work. While Min-hee is consulting her brother's love interest with her detective, a case has been assigned to her. The detective thinks it's just love counseling and gets caught up in a case while investigating why they broke up.
| Actor | Role |
|---|---|
 Min Do-yoonDetective | Detective |
 Cha WonMin-hee (민희) | Min-hee (민희) |
 Kim Ji-ahJi-woo (지우) | Ji-woo (지우) |
 Woo YeolWoo-yeon (우연) | Woo-yeon (우연) |
 Lim Ji-yeongJi-yeon (지연) | Ji-yeon (지연) |
 Lim Baek-hyunBaek-hwan (백환) | Baek-hwan (백환) |