A comedic idol music film about an unknown idol group named Bella, which has become a disorderly mess due to their agency’s poor treatment. Bella overcomes their conflict with an evil manager who tries to sell them off, and they eventually succeed in entering the Billboard charts.
| Actor | Role |
|---|---|
 Lee Ji-hoonBae Jae Seong | Bae Jae Seong |
 Bae Woo-heeKelly | Kelly |
 Son Byung-hoNot listed | Not listed |
 Moon Jong-upJang Jun | Jang Jun |
 Kim Na-hyunJenia | Jenia |
 Kenta TakadaReddy | Reddy |
| 유유호연Kang Do-young | Kang Do-young |
 Kim So-heeJian | Jian |
 Choi Woo-binNot listed | Not listed |