In-jae Heo

After dropping out of high school, Tae-sik sweeps out bullies on the street with his bare hands. Whenever he drinks alcohol, he becomes doglike and he is called "mad dog" because of not being afraid of a knife or blood. He is paroled, but Min-seok -- who Tae-sik harasses -- has become a detective... (seoulselection.com)

In Seoul, Byung-Doo is a twenty-nine year old gangster that works under the command of Sang-Shui in the mobster organization of the boss Hwang. Byung-Doo is also the patriarch of his family and is having financial problems to support his old mother that is very ill and his younger siblings... (imdb)

A young woman suspects her new boyfriend of infidelity and discovers that he actually has two other girlfriends. She meets the other women and the three of them become best friends. (imdb)