Kim Hyun-kyu

An unexpected phone call brings an elderly woman to her childhood country cottage, and memories of an orphan boy she knew 47 years ago come flooding back to her.

There is a married couple that has long been silent to each other. One evening, wife prepares a fatal supper and invites husband over to table. Wife brings up ‘the bitch’ on the table and husband hands her over a divorce paper. Biting her lips with fury, she makes a confession: "I poisoned your food."

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.

Dong-sik and Sung-woo, they're best friends. Sung-woo is dying with late-stage liver cancer. Sung-woo, being drunken, confesses that he has been loved Dong-sik's wife, Sujin for a long time.

A woman working as a cashier at an illegal gambling parlor pushes her luck by stealing money from gamblers as a way to pay off her own debts. When one gambler realizes he’s been cheated, he returns with murderous intent and the already dismal situation spirals out of control.