A brother takes his younger ten-year-old sister, who is doubting her dream, to "The Box", where you can meet your future self. How will her future self turn out?
| Actor | Role |
|---|---|
| DDaniel KimTerrance | Terrance |
| EEstelle Daon LeeLuna | Luna |
| KKonstantina SamartzisAngela | Angela |
| HHaesol ChoiIseul | Iseul |