A sudden explosion erupts in snowbound Causeway Bay, killing a wealthy Hong Kong businessman and igniting a fierce conflict between drug traffickers and those who oppose them. An investigation reveals that the chaos was part of a meticulously planned, unhinged series of actions orchestrated by the heir of a drug trafficking syndicate. Declaring war with the mission to create "a world without drugs" and change his family`s legacy, his actions plunge both the world above and the underworld below into utter turmoil.