A debt collector receives a call from a woman who is kidnapped by an unknown gang. He thinks it is a joke but soon, he realises that it is not a prank.
Set in contemporary Hong Kong, several young people are searching for romance and struggling to learn the difference between lust and love in an adventure that takes them to the mainland where pleasure is much more readily available.
When a series of eerie murders erupts across Hong Kong, grizzled veteran Huang and his reckless younger partner Wang, are assigned to track down the killer.
