Weary from his wife's repeated suicide attempts, the husband seeks help from a secretive agent who an old doctor introduced to him. In the middle of the night, "they" come to his house.

Major crimes unit detective Seong-jin arrests Tae-sung for petty crimes, but shocked to find out that he is the notorious serial killer. However, Seong-jin becomes doubtful of his identity as the serial murder case is investigated.

A beautiful workaholic is fired from her job as a marketing executive for a children's toy company. With her life spinning out of control she teams up with her neighbour, who owns a sex shop, to design and promote better sex toys.

After his son inadvertently killed a Korean girl in a hit and run accident, Hoh Yim travels to South Korea to reconcile with the victim's parents but learns far more about himself than he ever expected to.

A group of professional con artists scam poor, unsuspecting citizens with fraudulent bank loans. The scams go well for a while, but then they begin to distrust each other.

Joon-tae and Suk-hyeon, senior and junior at work whose relationship dates back to college, are under a common mission to entertain an executive from their client company. They hold the one and only opportunity to impress their client and their company- the night driven for success.