Hari and Duri are a sister and brother living in the Shinbi apartment complex, which is more than a hundred years old. Living with them is a 102-year-old goblin named Shinbi. One day, they find a secret cave hidden in the woods. Swept up by the power of the cave, they’re taken 22 years into the past, to 1996.
| Actor | Role |
|---|---|
 Cho Hyun-jungShinbi (voice) | Shinbi (voice) |
 Kim Young-eunHari (voice) | Hari (voice) |
 Kim Chae-haDoori (voice) | Doori (voice) |
 Shin Yong-wooChoi Gangrim (voice) | Choi Gangrim (voice) |
 Yeo Min-jeongGaeun (voice) | Gaeun (voice) |
 Shim Kyu-hyuckHyunwoo (voice) | Hyunwoo (voice) |
 Yang Jeong-hwaNot listed | Not listed |
 Min Eung-sikNot listed | Not listed |