An ordinary businessman in his forties, Jang Ga-pil returns home one day to find his daughter sexually molested by some schoolboys, including school boxing star Kang Tae-wook. Realizing that he has no background and money to fight back, he plans to stab Kang on the way to school. This fails miserably, but another student named Go Seung-suk agrees to teach Ga-pil to fight--in only 45 days.
Based on the novel "Fly Daddy Fly" written by Kazuki Kaneshiro.
Feature directorial debut for Choi Jong-tae.