Overview
Byung-gu, a once-famous former professional boxer, makes ends meet doing odd jobs at the gym. While eager to start boxing again, he gets diagnosed with "punch drunk syndrome," a condition caused by cerebral concussions. One day, a new member of the gym arrives and volunteers to help Byung-gu.
| Actor | Age then | Age now | |
|---|---|---|---|
 | 35 | 41 | |
 | 25 | 31 | |
 | 48 | 54 | |
 | 31 | 37 | |
 | 26 | 32 | |
 | 49 | 55 | |
 | 33 | 39 | |
 | 10 | 16 | |
 | 31 | 37 | |
 | - | - |