Set in Busan, South Korea during the 1970's, Lee Doo-Sam works for a group who become involved in smuggling high priced items like gold and watches. The government then implements a crackdown. Lee Doo-Sam becomes the scapegoat for his boss and serves time in prison. When he is released, Lee Doo-Sam jumps into the business of manufacturing and distributing methamphetamine. At a party, he meets lobbyist Kim Jung-A who has connections with powerful people. Kim Jung-A joins Lee Doo-Sam’s business venture. Lee Doo-Sam makes incredible profits, but he becomes restless and gets addicted to methamphetamine. Meanwhile, Prosecutor Kim In-Goo is transferred to the Busan Prosecutors' Office. While investigating a drug case, he notices Lee Doo-Sam. He targets Lee Doo-Sam and the powerful people who took bribes from him. Based on the Japanese Invasion, a drug king sells drugs to China and Japan and uses the money on Joseon Independence movement.