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.

• Barunson
• CGV Arthouse
• Um Tae-goo
• Lee Hye-ri
• Kim Hee-won
• Choi Jun-young
• Lee Sul
• Choi Deok-moon
• Im Seong-mi
• Lim Han-bin