In a ghost film, Feng Cuifan played a criminal who was killed and turned into a ghost. He went to the police station for revenge and was eliminated.

Jin () and Biao () are police partners. In an operation to arrest drug dealers, Kim did not arrive at the scene for some reason. Biao launched a fierce gun battle with several drug dealers alone, and was just killed by the drug Lord Fang Gang, but he didn't see the murderer's face until his death. Fang Gang disguised the scene as a gambling debt suicide. After his death, Biao refused to be ruined and died unsatisfied, vowing to find out the murderer and bribe the judge of the underworld to return to the dead. His ghost floated to the world, so he began to look for a savior to avenge himself. Xing (Stephen Chow) is a policeman who just graduated from the police academy. At work, he was found to have the symbol of savior mentioned by the judge of the underworld, so Dong Piao decided that he was his own destiny. Mark replaced the pistol given to Xing with the pistol for his own use. He wanted him to avenge himself and catch the real murderer for him, so he secretly arranged for him to partner with Kim and let him live in his former dormitory, which is also next to Kim. Stephen Chow meets his daughter Yu (Vivian) and falls for her beauty. At this time, Biao appeared, and he promised that as long as Xing helped him find out the real murderer, he would win the heart of a beautiful woman. Xing reluctantly agreed. So he possessed a gun and cast spells to help Stephen Chow get close to Jade, so as to avenge him. Stephen Chow and Biao quickly found the real murderer Fang Gang who killed Biao. At this time, Fang Gang also noticed Biao's return to Yang, and invited Biao's doomed nemesis evil mage to help. And arrange a lot of thugs around, no matter people or ghosts can do it. Jin Beibiao and Xing Jian, Taoist priests of Maoshan Mountain, saw that the days of marking the dead were numbered, and they were dissatisfied. They punished the dead and waited for revenge, but they were used by evil wizards to seal the ghost. Under the guidance of the ancestor Mao Shan, Jin Hexing made the elixir of life from the urine of gold lovers, cat excrement on the altar and big fairy fart to save the target. The three of them fought side by side and defeated the evil mage. Xing personally shot Fang Gang, thus revenging the target and making him feel at ease.