We were all young and reckless once, with our untamed youth. At the age of fifteen or sixteen, in the prime of youth, we often gathered in groups, easily picking up bad habits. The main character is of good character but forms a close bond with a classmate involved in organized crime. One day, the young boy discovers that his mother has developed kidney disease and needs a large sum of money to buy a dialysis machine. In a moment of impulsiveness, he and his friend from the underworld plan to extort money from a beverage company.

Thieves steal a large shipment of gold in mainland China before being robbed themselves. The detectives investigating the case follow the thieves to Hong Kong and team up with an undercover officer to retrieve the gold and apprehend the criminals. But when one of criminals turns out to be a childhood friend of one of the cops, things get complicated.

This film is put together by three city ghost stories that occurred after midnight. The first story describes a loud mouth slacker cop encounters after being ordered to guard a murder scene alone. The second has a couple accidentally hit someone while driving but could not find the victim's body. The third is about a bad son who is afraid his late mother would return for revenge, so he would rather spend nights playing mah jong with friends and wouldn't dare to go home, unfortunately things in this world have a way to go the opposite way......