Eighteen-year-old Soon-jeong dreams of escaping to Australia, but her strict homeroom teacher blocks her plans by denying her permission to miss night study for work. When mysterious classroom window break-ins trigger a school investigation, the pressure mounts. Can Soon-jeong endure it all and graduate as planned?
| Actor | Role |
|---|---|
 Jeon So-minJeong Hee-joo | Jeong Hee-joo |
 Kim Do-yeonLee Soon-jeong | Lee Soon-jeong |
 ExyKim Kyung-hee | Kim Kyung-hee |
 Park Seo-yeonKang Yi-ji | Kang Yi-ji |
 Cho Ha-youngNa Ye-ri | Na Ye-ri |
 Choo Ye-jinNot listed | Not listed |
| PPark So-eunGong Eun-ji | Gong Eun-ji |
| KKim Bo-gyeongInstagram Girl | Instagram Girl |
 Song Ji-yeonDong-hee | Dong-hee |