A buddy series of "Dukgyu," a 68-year-old making weird poses in front of the gym mirror, wearing a sleeveless t-shirt, and his grandson "Donghyun," who just doesn't get him.
| Actor | Role |
|---|---|
 Lee Byung-joonDeok Gyu | Deok Gyu |
 Cha Sun-hyungDong Hyeon | Dong Hyeon |
 Lee Jae-hwanFather | Father |
 Kim Mu-seobIn Ho | In Ho |