Oh Tae Shik, rather, Oh Kyeon Shik, who has been preparing to become a detective while working a different job, is a private establishment security guard who earns 880,000 won in Daechi Dong, Gangnam. Thanks to his dream of becoming a detective, he is like a bulldozer who does not know how to give up. He always watched CSI and Detective Columbo's movies, analyzing their traits and building his dream of becoming a great detective. He manages to pass the written test, but he doesn't meet the hearing baseline and fails. Then one day, coincidence happens and a fugitive on the run gets caught by Kyeon Shik when he throws a bottle of water he just bought at the runner. Kyeon Shik becomes a hero thanks to this.
Set in the 1960's. Joo-Goo is viewed as Korea's best sculptor, but he suffers from a disease which will slowly paralyze his body. He gives up interests in the arts and just spends his days meaninglessly. His wife, Jung-sook, tries to find a nude model for him, hoping the model might inspire him to sculpt again. One day, Jung-sook meets Min-gyung.