A comedic story of a gangster who hires the services of a detective agency to get rid of the ghost of a female student. Kang Doo Sub is a legendary gangster boss whose ugly face alone is enough to frighten off opponents. When a female ghost begins following his gang, however, he is forced to go to desperate measures to get rid of her and avoid becoming a laughing stock.
Jae Bak is a man who is weary of his work and family, finding solace only in secretly watching Yoo Hee, a woman who takes the same train as he does every morning. He becomes mesmerized by the red lollipop that she always has in hand, as well as her evident cheerfulness and energy. After 100 days of silent observation, he follows her home, and the two begin an affair.