Divorced, broke and working in construction, Lim-Duk-Gue is anything but your ideal father.

However, a talent scout asked him to form part of Fist of Legend, a TV program where middle aged men who had once been renowned for being strong during their teens fight in an all out contest to see who becomes the winner. The looser in turn being ridiculed by everyone else.

Obviously, he refused. But now that his daughter has gotten herself into more trouble than what she could handle, Lim-Duk-Gue decides to participate in Fist of Legend for the prize money so he can avoid his only child from being expelled from her school.

Original webtoon (Korean webcomic)
http://cartoon.media.daum.net/webtoon/view/legendpunch