Amid the hubbub of the New Year’s Eve firework display, three youngsters of different backgrounds become roommates in the juvenile detention house. However, they soon come to realize that they could never leave the place for good.
| Actor | Role |
|---|---|
 Li Li-rongYAMAHA | YAMAHA |
| CChen EnChuan | Chuan |
 Hou Ke-keSonny | Sonny |
 Lo Neng-huaController Ming | Controller Ming |
 Shih Sheng-lungNight Shift Controller | Night Shift Controller |
 Han Ya-xiArt Teacher | Art Teacher |
 Liu Chang-hanSpeeching Chairman | Speeching Chairman |
| LLi Hsiu-shaChuan's grandmother | Chuan's grandmother |