After waking up with mysterious wounds on his hands, a champion fighter finds himself in an otherworldly battle against evil forces that wreak havoc in the human world.
| Actor | Role |
|---|---|
 Park Seo-junYong-hu | Yong-hu |
 Ahn Sung-kiFather Ahn | Father Ahn |
 Woo Do-hwanJi-shin | Ji-shin |
 Choi Woo-shikFather Choi | Father Choi |
 Park Ji-hyunSu-jin | Su-jin |
 Jung Ji-hoonHo-seok | Ho-seok |
 Lee Seung-heeStranger | Stranger |
 Sim Hee-seopFather Kim | Father Kim |
 Kim See-eunTeresa | Teresa |
| KKim Seon-minAngela | Angela |
| JJeong Eui-soonVeronica | Veronica |
 Kim Beom-sooBeom-soo | Beom-soo |
 Park Jae-hongSeon-ho | Seon-ho |
 Cha Si-wonDae-hwan | Dae-hwan |
 Lee Seung-joonYong-hu's Father | Yong-hu's Father |
 Ryu Kyung-sooDoctor | Doctor |
 Seo Jeong-yeonSu-jin's Mother | Su-jin's Mother |
 Jo Eun-hyungHong-jin | Hong-jin |
 Lee Jung-hyunJin | Jin |
 Park Ji-yeolYeol | Yeol |
| SShin Min-hoMin | Min |
 Mi SeokWan | Wan |
 Lee SeolSul | Sul |
 Park Jin-jooDelivery Person | Delivery Person |
 Han Hye-jiNurse | Nurse |
 Jeong Da-eunEun-young | Eun-young |
| SSeung Hyung-baeSeon-ho's Man | Seon-ho's Man |
 Shin An-jinDoctor | Doctor |
 Yoon Jae-inRadio Announcer | Radio Announcer |
 Lee Chan-yuYong-hu (young) | Yong-hu (young) |