Young residents of Seoul meet, separate, wait and dream by the Inner Circle Line of the Seoul subway system.
| Actor | Role |
|---|---|
| YYongkun BaeMale Youngju | Male Youngju |
| MMoonsu BangClub patron | Club patron |
| SSoyun JangHyun | Hyun |
| EEun-yong YangFemale Youngju | Female Youngju |
 Jang So-yeonNot listed | Not listed |