| After long and grueling hours immersed in brutal crime investigations, lead detective Choi Young Jin must face the particular horrors of singlehandedly raising her daughter Ha Eun. Any way you look at it, Young Jin's got her work cut out for her, but it's only a matter of time before her professional and personal worlds collide in new and disastrous ways. |
| Name | Character | Episodes |
|---|---|---|
| Jang Hyun-sung | Park Woo-Jin | 20 |
| Jeong In-kyeom | Jung In-Gyeom | 20 |
| Kim Sung-ryung | Ko Yoon-Jung | 20 |
| Lee Ki-young | Yeom Sang-Min | 18 |
| Lee Da-hee | Min Do-Young | 18 |
| Kim Hee-ae | Choi Young-Jin | 18 |
| Shin Seung-hwan | Bae Dal-Hwan | 18 |