A Vietnam War veteran, Ki Gwang is an old bus driver. One day, he faced that his son had committed suicide and met his granddaughter at the funeral. However, he founds that some friends of his son has been using as his granddaughter as their need, This was the beginning of his vengeance for the world…
| Actor | Role |
|---|---|
 Park Keun-hyongPark Ki-gwang | Park Ki-gwang |
 Go Bo-gyeolPark Bo-ram | Park Bo-ram |
 Jung Jin-youngKim Yang-don | Kim Yang-don |
 Oh Seung-yunKim Kyu-young | Kim Kyu-young |
 Woo Ki-hongSuk Jong-do | Suk Jong-do |
| LLee Ye-eunStudent | Student |
| SSeo Sin-wooTeacher (voice) | Teacher (voice) |
| OO Gi-hwanElderly Man 2 | Elderly Man 2 |