"Sunday Seoul" is a film with three nonsensical episodes: THE WEREWOLF: A high school student Do-yeon who is the victim of bullying in school, is the main character of the first episode. He is not good at studying or at fighting. One day, an unexpected change happens to his body. THE VISITOR: On a pitch-black stormy night, a woman is visited by a stranger seeking shelter. The stranger eventually, is revealed as a serial killer on the run. THE YOUNG ADVENTURER: Seeking revenge for his father, a son embarks on a journey in which he encounters a young girl by chance and starts to learn martial arts.
| Actor | Role |
|---|---|
 Bong Tae-gyuNot listed | Not listed |
 Lee Chung-ahNot listed | Not listed |
 Jeon Jae-hyeongNot listed | Not listed |
| JJeong Jae-yongNot listed | Not listed |
 Jeong So-nyeoNot listed | Not listed |
 Kim So-yeonNot listed | Not listed |
 Kim Soo-miNot listed | Not listed |
 Lee Hyeon-wooNot listed | Not listed |
| PPark Seong-binNot listed | Not listed |
| YYong IhNot listed | Not listed |
| YYoo Seol-ahNot listed | Not listed |
 Im Ye-jinNot listed | Not listed |
 Go Eun-ahNot listed | Not listed |
| JJames Kim Su-HyeonNot listed | Not listed |
 Kim Chu-ryeonFather | Father |
 Don LeeNot listed | Not listed |
| SSeo Myeong-seokJSA Private / Priest | JSA Private / Priest |
 Yoon Sang-hyunNot listed | Not listed |