A firefighter salvages a spiritual shrine from an old burning building, which releases the gentle ghost of a Chinese opera singer, killed in a stage fire 30 years before. Grateful for saving her, the ghost falls for the firefighter and will stop at nothing to ensure his safety from the evils that lurk ahead. At the same time, the firefighter doesn't realize he is dating a ghost.

The Lung (Dragon) triad used to be one of Hong Kong's most powerful crime families, but its power has waned in recent years. The crime boss Lung Ying feels that their involvement in drug trafficking has resulted in costs that far outweigh the benefits, and he considers investing his wealth into relatively safe and legal industries. His second-in-command White Wolf and his frequent collaborator Tsui disagree with his anti-drug policies, and they plot to take over the triad. They assassinate Lung Ying, and they execute most members of the Lung family in a brutal massacre. Three members of the family survive the attack, and they start plotting their own brutal revenge. White Wolf is betrayed and assassinated by Tsui shortly after claiming power. Tsui is quite willing to kill or sacrifice all for his subordinates to secure power, but he might be weakening his own organization due to this mentality.

Martial art film standout Liang Chia-jen brings the same animalistic intensity from his early heroic bloodshed films to his Danger Has Two Faces tough, ex-cop character now relegated to becoming a pet store owner. The stern Police Superintendent Liu played by Chu Chiang sets the stage for his later role in John Woo's The Killer while new comer Fei Hsiang must do Serpico-like things to find out which cop is paid for by the mob.

Little Tiger ventures from the sticks to the big city in search of his cop brother Big Tiger, an honest cop working in a corrupt system. Surmising that life in the police force was not his cup of tea, Little Tiger joins the Swallow Acrobatic Troop, which he excels in because of his kung-fu prowess. When a band of thugs from Chin Hung-yun's group attacks the troop, Little Tiger not only handily fights them back but also infiltrates their organization to destroy them from the inside. Meanwhile, Big Tiger's old flame Mary returns from America to join the revolutionaries. Big Tiger soon finds himself torn between his love of this girl and his orders to arrest all revolutionaries.

Lo Tung and his friend Malted Candy, pedicab drivers working the streets of Macao, have both fallen in love. The problem is that both their objects of affection - one a baker, the other a prostitute - are working under cruel and lecherous bosses. Somehow, the pair must find a way to win the ladies' hearts and free them from their unpleasant jobs.