1993 Hong Kong comedy film directed by Wang Jing, starring Stephen Chow, Mui Yanfang, Zhang Min, Huang Qiusheng, Chen Baixiang, Zhou Haimei and Zhu Mimi.
The rich man's son Wang Million was killed in the apartment, the police in order to investigate the truth, once again sent Zhou Xingxing, who was extremely similar to Wang Million's appearance, to go undercover to investigate, Wang Million's star wife Tang Judi came to pick up the fake husband to go home, and He Min's cousin followed and was responsible for protecting Zhou Xingxing's safety.
Zhou Xingxing deceived Tang Judy with amnesia, and Tang Judy had found that this fake husband was very different from his previous behavior, but she did not expose Zhou Xingxing, but enjoyed his current life and let him relive the good memories of the past with himself. Zhou Xingxing found that Tang Judy was bisexual, and found that she actually hooked up with his wife He Min, who was in the flower shop, and it was also laughable to catch the adulterer on the spot.
Zhou Xingxing focused his attention on Lin Dayue, a hardcore friend of Wang Million's business partner, and used the stolen money of the police station to incarnate as the god of gambling with him, but there was no useful clue. Later, Lin Dayue used Tang Judi's nude photos to extort huge sums of money from her, and Zhou Xingxing followed Tang Judy into Lin Dayue's office building, but found that Lin Dayue had been killed, so he regarded Tang Judi as a murderer.
At the last dance, Zhou Xingxing was assassinated several times and survived, the police directly arrested Tang Judi on the spot, she did not resist and shouted injustice but kissed Zhou Xingxing, the case seemed to be over, Zhou Xingxing also ended the undercover mission, went home and reunited with his wife, but was attacked by Tang Judi's personal assistant Cheng Wenjing, wanted to harm him, fortunately Zhou Xingxing had already taken precautions and subdued the gangsters.
Finally the truth came out, it turned out that Cheng Wenjing was the real culprit of the serial murder case, she and Tang Judi loved each other deeply, got rid of the people who hurt and threatened the lover, the nude photos taken by Lin Dayue were the two of them, she also wanted to get rid of Zhou Xingxing to maintain her position, but several times were blocked by Tang Judi, because Tang Judi thought that Zhou Xingxing was the real husband in her memory, she couldn't bear to hurt him, and at the same time did not want to hurt Cheng Wenjing and chose to bear the guilt.
In the end, Tang Judi was successfully acquitted, and Zhou Xingxing once again cooperated with her to stage the good memories of her student days.