A man born and raised in the outskirts of Busan gets involved in a gangster war for survival. It is based on the original novel by Kim Un-su, the 22nd Han Moo-sook Literature prize winner. Kuam is a shabby port town in the shadow of stunning port city of Busan. Hee-soo is a third-rate gangster who has been acting like a hotel manager under Don Son for 20 years. Seemingly out of nowhere, Yong-kang, who fled the country as a murder suspect, returns home and begins causing trouble all over town, which only adds pressure to Hee-soo. "Drugs? Port? What's going on?" When he finally comes to, he's in the middle of this turmoil. What decisions can he make to save his pitiful soul?