| After creating a bunch of famous idols, a producer begins to question the whole process of making a star, so he goes on a break for a few years. Once he returns to the company, he gathers some trainees left on the back burner and tries to launch a co-ed idol group. The trainees undergo some peculiar training to debut in this group. |
| Name | Character | Episodes |
|---|---|---|
| Kim Hee-jung | Kim Hee-jeong | 5 |
| Kang Seong-jin | YZ Ent. president | 5 |
| JISOO | Himself / Inkigayo's MC | 1 |
| Kim So-hee | Himself | 1 |