The doll that elementary school student "Carrie" cherished turned into an alien. He looks like a stuffed doll, but talking and playing superpowers like Superman. A super creature from space entered Carrie's dog stuffed doll "Kola". The two live together in Carrie's room and become friends. Adults do not know the existence of superpowers Kola. It's a secret between Carrie and Kola.
| Actor | Role |
|---|---|
 Choi Ha-riCarrie (voice) | Carrie (voice) |
 Um Sang-hyunKola (voice) | Kola (voice) |
 Lee Da-eunEllie (voice) | Ellie (voice) |
 Won Ok-hwaKevin (voice) | Kevin (voice) |
 Jung Joo-wonNot listed | Not listed |
| LLee Chang-minNot listed | Not listed |
| HHan Sang-taeNot listed | Not listed |
 Kim Ji-jungNot listed | Not listed |
| KKang Na-huNot listed | Not listed |
| KKim Sin-biNot listed | Not listed |
| SSo Kyeong-hoNot listed | Not listed |