No. 7 Mission Cantonese

Huang Yinggu (Sit Jiayan) is optimistic by nature and is self-sufficient with her daughter Sun Minhua (Wang Lin) and her family. Ying has a close friendship with her neighbor Wang Zhixiang (Xu Siu-hsiung), and her son Wang Jian (Wu Qihua) treats Ying as a reborn mother. Corruption is prevalent in Hong Kong nowadays. Ying Yin, who works at a stall, owes debts and occasionally acts as a scapegoat to repay debts and spends several days in jail. Once, Ying didn't know what was going on and agreed to be the scapegoat. As a result, he was turned into a murderer and sentenced to death. Ying cut off his pigtails during execution and ordered Xiang, a prison guard, to give them to Hua as a souvenir. After Ying's death, the ghost of Ying was attached to the pigtail, but because the pigtail fell into the evidence room containing the statue of Guan Gong, he could not come out. He was trapped for more than ten years... In the blink of an eye, Jian had grown up and became a policeman. The upright Jian could only guard the evidence room because he did not want to be corrupt. Jian found Ying's braid in the evidence room, and the two finally recognized each other. Ye Jiasheng (Cheung Siu-fai), who caused trouble to Ying, was promoted to detective, and the statue of Guan Gong was relocated, so that Ying's wronged soul could regain his freedom. Ying misses Hua, and Jian actively helps her find Hua's whereabouts; Jian also gets help from Ying and repeatedly solves strange cases. Perhaps it is fate that Ying finds Hua, only to find that Hua is being used as a scapegoat just like her...