This film adapts the novel by Yeonbeon authors, Liang Chun-sik and Kim Nam-hyun, for the screen. It describes the romantic stories of seventeen-year-old boys and girls, which can be applied to the general young generation of Yeon-beon these days..

After barely surviving a brutal attack by a sadistic serial killer, crime boss Jang Dong-su is left humiliated. Determined to catch the killer known as K, he forms an uneasy alliance with Jung Tae-seok, a relentless and incorruptible detective who often disrupts his illegal business. However, while Jang Dong-su wants K dead, Jung Tae-suk is determined to bring him to justice. With a deal in place—whoever finds K first will decide his fate—the hunt begins, blurring the lines between crime and law.

In Chinatown, law and order is turned upside down when a trio of feral Chinese gangsters arrive, start terrorizing civilians, and usurping territory. The beleaguered local gangsters team up with the police, lead by the badass loose cannon Ma Seok-do, to bring them down. Based on a true story.

Jin-seok, 21-year-old, moves into a new house with his family. He suffers from a slight schizophrenia but he carries an ordinary life under the warm care of the family. His older brother Yu-seok is a decent college student, a mentor, and role model for Jin-seok. One night, his beloved brother is kidnapped by unidentified assailants before Jin-seok's eye. Jin-seok can’t recognize their faces, but can remember only the VIN that matches with no car. After long silence of 19 days, suddenly Yu-seok returns home, but remembers nothing which had happened in the meantime. And soon Jin-seok feels Yu-seok is a total stranger.