Special police
The story takes place in Hong Kong in a conflict between worlds of Humans and "Rapters". Special police in the city are investigating a mysterious drug named "happiness". Taki, one of the police, meets his old lover Windy, who is a rapter and now mistress of a powerful old rapter named Daishu. Taki and other special police track down and fight Daishu, but later find that he hopes to coexist with human. The son of Daishu, Shudo, is the mastermind. In the end, Shudo is defeated, but Daishu and Taki's friends die too. Windy leaves alone.