Olympic medalists join the police force through a special recruitment program, trading medals for badges as they tackle violent crimes and injustices with their athletic skills.
| Actor | Role |
|---|---|
 Park Bo-gumYun Dong-ju | Yun Dong-ju |
 Kim So-hyunJi Han-na | Ji Han-na |
 Oh Jung-seMin Joo-young | Min Joo-young |
 Lee Sang-yiKim Jong-hyeon | Kim Jong-hyeon |
 Heo Sung-taeKo Man-sik | Ko Man-sik |
 Tae Won-seokShin Jae-hong | Shin Jae-hong |
 Seo Hyun-chulHwang Kyeong-cheol | Hwang Kyeong-cheol |
 Jeong Man-sikOh Jong-gu | Oh Jong-gu |
| PPark Chul-minKim Geum-nam | Kim Geum-nam |
 Jung Seo-yeonJung Mi-ja | Jung Mi-ja |
| EEung-soo KimCho Pan-yeol | Cho Pan-yeol |
 Lee Ji-hyeonJung Gyeong-mi | Jung Gyeong-mi |
 Go JoonLeo | Leo |
 Kim Ji-yooYoung Ji Han-na | Young Ji Han-na |