Life is tough for Chol-Min - his mother died during labor, forcing him to grow up alonge with his stoic police officer father. However, Chol-Min lives a high-spirited life and roams around town with his own mutt, a half-bred police dog, making friends and enemies along the way.
| Actor | Role |
|---|---|
 Jung Woo-sungCha Cheol-min | Cha Cheol-min |
 Uhm Ji-wonKim Jeong-ae | Kim Jeong-ae |
 Kim Jung-taeJin-mook | Jin-mook |
| YYang Joong-kyeongOh Deok-man | Oh Deok-man |
 Kim Kap-sooLeader Cha | Leader Cha |
 Hong Ji-youngSoon Ja | Soon Ja |
 Lee HwanPolice officer in jail | Police officer in jail |
 Lee Sang-hoonDae Ddeok | Dae Ddeok |
 Son Sang-kyungOng Goon | Ong Goon |
 Kim Kwang-kyuTeam Leader Seok | Team Leader Seok |
 Park Sang-gyuDetective Park | Detective Park |
 Kim Sang-hoJang Son | Jang Son |
| YYoon Suk-jinJin Muk-Pae #1 | Jin Muk-Pae #1 |
 Jeon Hun-taeJin Muk-Pae #2 | Jin Muk-Pae #2 |
 Kim Yong-woonCheol Min-Pae #7 | Cheol Min-Pae #7 |
 Lee Hae-woonCheol Min-Pae #4 | Cheol Min-Pae #4 |
 Park Young-sooChul Min-Pae | Chul Min-Pae |
 Lee Geun-hooCheol Min's group | Cheol Min's group |
| CCheon Myeong-jaeSeong-tae | Seong-tae |