Busan, South Korea, 1970s. Lee Doo-sam is a small-time smuggler. After helping a drug gang to smuggle meth, he falls into the dark crime world. Quick-witted and full of ambition, he eventually takes over the drug underworld and starts to lead a double life: a good community leader during the day but an infamous drug lord during the night.

A patrol officer gets into an accident and his soul gets separated from his body. Desperate to solve the case and return to his beloved girlfriend, but is at his wits’ end as a wandering spirit. Unexpectedly he discovers someone who can see him.