The story of boys who are scattered in the past, present, and future to find the star of hope in order to save the Earth which is devastated by a virus spread by a group of evil.
| Actor | Role |
|---|---|
 TheoSelf | Self |
 JongseobSelf | Self |
 SoulSelf | Self |
 JiungSelf | Self |
 KeehoSelf | Self |
 IntakSelf | Self |
 Lee Chae-YunSelf | Self |
 Jung Jin-youngFuture Ahjussi | Future Ahjussi |
 Kim Seol-hyunFuture Seo Noona | Future Seo Noona |
 Jung Yong-hwaPresent Ahjussi | Present Ahjussi |
 Jo Jae-yunChae-yoon's Father | Chae-yoon's Father |
 Jung Hae-inPast Ahjussi | Past Ahjussi |
 Yoo Jae-sukPast Ahjussi | Past Ahjussi |
 Choi Yeo-jinIn-tak's Dance Teacher | In-tak's Dance Teacher |
 Hwang Dong-heeWeirdo | Weirdo |
 Kim Seo-haNot listed | Not listed |